21070620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1$

素因数の和:196

約数の個数: 144

約数和(自身を含む): 69058080

約数和(自身を除く): 47987460

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 61, 76, 90, 95, 101, 114, 122, 171, 180, 183, 190, 202, 228, 244, 285, 303, 305, 342, 366, 380, 404, 505, 549, 570, 606, 610, 684, 732, 855, 909, 915, 1010, 1098, 1140, 1159, 1212, 1220, 1515, 1710, 1818, 1830, 1919, 2020, 2196, 2318, 2745, 3030, 3420, 3477, 3636, 3660, 3838, 4545, 4636, 5490, 5757, 5795, 6060, 6161, 6954, 7676, 9090, 9595, 10431, 10980, 11514, 11590, 12322, 13908, 17271, 17385, 18180, 18483, 19190, 20862, 23028, 23180, 24644, 28785, 30805, 34542, 34770, 36966, 38380, 41724, 52155, 55449, 57570, 61610, 69084, 69540, 73932, 86355, 92415, 104310, 110898, 115140, 117059, 123220, 172710, 184830, 208620, 221796, 234118, 277245, 345420, 351177, 369660, 468236, 554490, 585295, 702354, 1053531, 1108980, 1170590, 1404708, 1755885, 2107062, 2341180, 3511770, 4214124, 5267655, 7023540, 10535310, 21070620]

約数ペア:

[(1, 21070620), (2, 10535310), (3, 7023540), (4, 5267655), (5, 4214124), (6, 3511770), (9, 2341180), (10, 2107062), (12, 1755885), (15, 1404708), (18, 1170590), (19, 1108980), (20, 1053531), (30, 702354), (36, 585295), (38, 554490), (45, 468236), (57, 369660), (60, 351177), (61, 345420), (76, 277245), (90, 234118), (95, 221796), (101, 208620), (114, 184830), (122, 172710), (171, 123220), (180, 117059), (183, 115140), (190, 110898), (202, 104310), (228, 92415), (244, 86355), (285, 73932), (303, 69540), (305, 69084), (342, 61610), (366, 57570), (380, 55449), (404, 52155), (505, 41724), (549, 38380), (570, 36966), (606, 34770), (610, 34542), (684, 30805), (732, 28785), (855, 24644), (909, 23180), (915, 23028), (1010, 20862), (1098, 19190), (1140, 18483), (1159, 18180), (1212, 17385), (1220, 17271), (1515, 13908), (1710, 12322), (1818, 11590), (1830, 11514), (1919, 10980), (2020, 10431), (2196, 9595), (2318, 9090), (2745, 7676), (3030, 6954), (3420, 6161), (3477, 6060), (3636, 5795), (3660, 5757), (3838, 5490), (4545, 4636)]