20015820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{919}}^1$

素因数の和:956

約数の個数: 108

約数和(自身を含む): 66808560

約数和(自身を除く): 46792740

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 121, 132, 165, 180, 198, 220, 242, 330, 363, 396, 484, 495, 605, 660, 726, 919, 990, 1089, 1210, 1452, 1815, 1838, 1980, 2178, 2420, 2757, 3630, 3676, 4356, 4595, 5445, 5514, 7260, 8271, 9190, 10109, 10890, 11028, 13785, 16542, 18380, 20218, 21780, 27570, 30327, 33084, 40436, 41355, 50545, 55140, 60654, 82710, 90981, 101090, 111199, 121308, 151635, 165420, 181962, 202180, 222398, 303270, 333597, 363924, 444796, 454905, 555995, 606540, 667194, 909810, 1000791, 1111990, 1334388, 1667985, 1819620, 2001582, 2223980, 3335970, 4003164, 5003955, 6671940, 10007910, 20015820]

約数ペア:

[(1, 20015820), (2, 10007910), (3, 6671940), (4, 5003955), (5, 4003164), (6, 3335970), (9, 2223980), (10, 2001582), (11, 1819620), (12, 1667985), (15, 1334388), (18, 1111990), (20, 1000791), (22, 909810), (30, 667194), (33, 606540), (36, 555995), (44, 454905), (45, 444796), (55, 363924), (60, 333597), (66, 303270), (90, 222398), (99, 202180), (110, 181962), (121, 165420), (132, 151635), (165, 121308), (180, 111199), (198, 101090), (220, 90981), (242, 82710), (330, 60654), (363, 55140), (396, 50545), (484, 41355), (495, 40436), (605, 33084), (660, 30327), (726, 27570), (919, 21780), (990, 20218), (1089, 18380), (1210, 16542), (1452, 13785), (1815, 11028), (1838, 10890), (1980, 10109), (2178, 9190), (2420, 8271), (2757, 7260), (3630, 5514), (3676, 5445), (4356, 4595)]