20015460

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1$

素因数の和:274

約数の個数: 144

約数和(自身を含む): 66673152

約数和(自身を除く): 46657692

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 31, 34, 36, 45, 51, 60, 62, 68, 85, 90, 93, 102, 124, 153, 155, 170, 180, 186, 204, 211, 255, 279, 306, 310, 340, 372, 422, 465, 510, 527, 558, 612, 620, 633, 765, 844, 930, 1020, 1054, 1055, 1116, 1266, 1395, 1530, 1581, 1860, 1899, 2108, 2110, 2532, 2635, 2790, 3060, 3162, 3165, 3587, 3798, 4220, 4743, 5270, 5580, 6324, 6330, 6541, 7174, 7596, 7905, 9486, 9495, 10540, 10761, 12660, 13082, 14348, 15810, 17935, 18972, 18990, 19623, 21522, 23715, 26164, 31620, 32283, 32705, 35870, 37980, 39246, 43044, 47430, 53805, 58869, 64566, 65410, 71740, 78492, 94860, 98115, 107610, 111197, 117738, 129132, 130820, 161415, 196230, 215220, 222394, 235476, 294345, 322830, 333591, 392460, 444788, 555985, 588690, 645660, 667182, 1000773, 1111970, 1177380, 1334364, 1667955, 2001546, 2223940, 3335910, 4003092, 5003865, 6671820, 10007730, 20015460]

約数ペア:

[(1, 20015460), (2, 10007730), (3, 6671820), (4, 5003865), (5, 4003092), (6, 3335910), (9, 2223940), (10, 2001546), (12, 1667955), (15, 1334364), (17, 1177380), (18, 1111970), (20, 1000773), (30, 667182), (31, 645660), (34, 588690), (36, 555985), (45, 444788), (51, 392460), (60, 333591), (62, 322830), (68, 294345), (85, 235476), (90, 222394), (93, 215220), (102, 196230), (124, 161415), (153, 130820), (155, 129132), (170, 117738), (180, 111197), (186, 107610), (204, 98115), (211, 94860), (255, 78492), (279, 71740), (306, 65410), (310, 64566), (340, 58869), (372, 53805), (422, 47430), (465, 43044), (510, 39246), (527, 37980), (558, 35870), (612, 32705), (620, 32283), (633, 31620), (765, 26164), (844, 23715), (930, 21522), (1020, 19623), (1054, 18990), (1055, 18972), (1116, 17935), (1266, 15810), (1395, 14348), (1530, 13082), (1581, 12660), (1860, 10761), (1899, 10540), (2108, 9495), (2110, 9486), (2532, 7905), (2635, 7596), (2790, 7174), (3060, 6541), (3162, 6330), (3165, 6324), (3587, 5580), (3798, 5270), (4220, 4743)]