20018460

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{619}}^1$

素因数の和:656

約数の個数: 144

約数和(自身を含む): 71245440

約数和(自身を除く): 51226980

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 28, 30, 33, 35, 42, 44, 49, 55, 60, 66, 70, 77, 84, 98, 105, 110, 132, 140, 147, 154, 165, 196, 210, 220, 231, 245, 294, 308, 330, 385, 420, 462, 490, 539, 588, 619, 660, 735, 770, 924, 980, 1078, 1155, 1238, 1470, 1540, 1617, 1857, 2156, 2310, 2476, 2695, 2940, 3095, 3234, 3714, 4333, 4620, 5390, 6190, 6468, 6809, 7428, 8085, 8666, 9285, 10780, 12380, 12999, 13618, 16170, 17332, 18570, 20427, 21665, 25998, 27236, 30331, 32340, 34045, 37140, 40854, 43330, 47663, 51996, 60662, 64995, 68090, 81708, 86660, 90993, 95326, 102135, 121324, 129990, 136180, 142989, 151655, 181986, 190652, 204270, 238315, 259980, 285978, 303310, 333641, 363972, 408540, 454965, 476630, 571956, 606620, 667282, 714945, 909930, 953260, 1000923, 1334564, 1429890, 1668205, 1819860, 2001846, 2859780, 3336410, 4003692, 5004615, 6672820, 10009230, 20018460]

約数ペア:

[(1, 20018460), (2, 10009230), (3, 6672820), (4, 5004615), (5, 4003692), (6, 3336410), (7, 2859780), (10, 2001846), (11, 1819860), (12, 1668205), (14, 1429890), (15, 1334564), (20, 1000923), (21, 953260), (22, 909930), (28, 714945), (30, 667282), (33, 606620), (35, 571956), (42, 476630), (44, 454965), (49, 408540), (55, 363972), (60, 333641), (66, 303310), (70, 285978), (77, 259980), (84, 238315), (98, 204270), (105, 190652), (110, 181986), (132, 151655), (140, 142989), (147, 136180), (154, 129990), (165, 121324), (196, 102135), (210, 95326), (220, 90993), (231, 86660), (245, 81708), (294, 68090), (308, 64995), (330, 60662), (385, 51996), (420, 47663), (462, 43330), (490, 40854), (539, 37140), (588, 34045), (619, 32340), (660, 30331), (735, 27236), (770, 25998), (924, 21665), (980, 20427), (1078, 18570), (1155, 17332), (1238, 16170), (1470, 13618), (1540, 12999), (1617, 12380), (1857, 10780), (2156, 9285), (2310, 8666), (2476, 8085), (2695, 7428), (2940, 6809), (3095, 6468), (3234, 6190), (3714, 5390), (4333, 4620)]