821708940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1999}}^1$

素因数の和:2072

約数の個数: 192

約数和(自身を含む): 2709504000

約数和(自身を除く): 1887795060

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 17, 20, 26, 30, 31, 34, 39, 51, 52, 60, 62, 65, 68, 78, 85, 93, 102, 124, 130, 155, 156, 170, 186, 195, 204, 221, 255, 260, 310, 340, 372, 390, 403, 442, 465, 510, 527, 620, 663, 780, 806, 884, 930, 1020, 1054, 1105, 1209, 1326, 1581, 1612, 1860, 1999, 2015, 2108, 2210, 2418, 2635, 2652, 3162, 3315, 3998, 4030, 4420, 4836, 5270, 5997, 6045, 6324, 6630, 6851, 7905, 7996, 8060, 9995, 10540, 11994, 12090, 13260, 13702, 15810, 19990, 20553, 23988, 24180, 25987, 27404, 29985, 31620, 33983, 34255, 39980, 41106, 51974, 59970, 61969, 67966, 68510, 77961, 82212, 101949, 102765, 103948, 119940, 123938, 129935, 135932, 137020, 155922, 169915, 185907, 203898, 205530, 247876, 259870, 309845, 311844, 339830, 371814, 389805, 407796, 411060, 441779, 509745, 519740, 619690, 679660, 743628, 779610, 805597, 883558, 929535, 1019490, 1053473, 1239380, 1325337, 1559220, 1611194, 1767116, 1859070, 2038980, 2106946, 2208895, 2416791, 2650674, 3160419, 3222388, 3718140, 4027985, 4213892, 4417790, 4833582, 5267365, 5301348, 6320838, 6626685, 8055970, 8835580, 9667164, 10534730, 12083955, 12641676, 13253370, 13695149, 15802095, 16111940, 21069460, 24167910, 26506740, 27390298, 31604190, 41085447, 48335820, 54780596, 63208380, 68475745, 82170894, 136951490, 164341788, 205427235, 273902980, 410854470, 821708940]

約数ペア:

[(1, 821708940), (2, 410854470), (3, 273902980), (4, 205427235), (5, 164341788), (6, 136951490), (10, 82170894), (12, 68475745), (13, 63208380), (15, 54780596), (17, 48335820), (20, 41085447), (26, 31604190), (30, 27390298), (31, 26506740), (34, 24167910), (39, 21069460), (51, 16111940), (52, 15802095), (60, 13695149), (62, 13253370), (65, 12641676), (68, 12083955), (78, 10534730), (85, 9667164), (93, 8835580), (102, 8055970), (124, 6626685), (130, 6320838), (155, 5301348), (156, 5267365), (170, 4833582), (186, 4417790), (195, 4213892), (204, 4027985), (221, 3718140), (255, 3222388), (260, 3160419), (310, 2650674), (340, 2416791), (372, 2208895), (390, 2106946), (403, 2038980), (442, 1859070), (465, 1767116), (510, 1611194), (527, 1559220), (620, 1325337), (663, 1239380), (780, 1053473), (806, 1019490), (884, 929535), (930, 883558), (1020, 805597), (1054, 779610), (1105, 743628), (1209, 679660), (1326, 619690), (1581, 519740), (1612, 509745), (1860, 441779), (1999, 411060), (2015, 407796), (2108, 389805), (2210, 371814), (2418, 339830), (2635, 311844), (2652, 309845), (3162, 259870), (3315, 247876), (3998, 205530), (4030, 203898), (4420, 185907), (4836, 169915), (5270, 155922), (5997, 137020), (6045, 135932), (6324, 129935), (6630, 123938), (6851, 119940), (7905, 103948), (7996, 102765), (8060, 101949), (9995, 82212), (10540, 77961), (11994, 68510), (12090, 67966), (13260, 61969), (13702, 59970), (15810, 51974), (19990, 41106), (20553, 39980), (23988, 34255), (24180, 33983), (25987, 31620), (27404, 29985)]