21598291275

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{149}}^1\times {\mathrm{15973}}^1$

素因数の和:16157

約数の個数: 72

約数和(自身を含む): 39516481200

約数和(自身を除く): 17918189925

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 121, 149, 165, 275, 363, 447, 605, 745, 825, 1639, 1815, 2235, 3025, 3725, 4917, 8195, 9075, 11175, 15973, 18029, 24585, 40975, 47919, 54087, 79865, 90145, 122925, 175703, 239595, 270435, 399325, 450725, 527109, 878515, 1197975, 1352175, 1932733, 2379977, 2635545, 4392575, 5798199, 7139931, 9663665, 11899885, 13177725, 26179747, 28990995, 35699655, 48318325, 59499425, 78539241, 130898735, 144954975, 178498275, 287977217, 392696205, 654493675, 863931651, 1439886085, 1963481025, 4319658255, 7199430425, 21598291275]

約数ペア:

[(1, 21598291275), (3, 7199430425), (5, 4319658255), (11, 1963481025), (15, 1439886085), (25, 863931651), (33, 654493675), (55, 392696205), (75, 287977217), (121, 178498275), (149, 144954975), (165, 130898735), (275, 78539241), (363, 59499425), (447, 48318325), (605, 35699655), (745, 28990995), (825, 26179747), (1639, 13177725), (1815, 11899885), (2235, 9663665), (3025, 7139931), (3725, 5798199), (4917, 4392575), (8195, 2635545), (9075, 2379977), (11175, 1932733), (15973, 1352175), (18029, 1197975), (24585, 878515), (40975, 527109), (47919, 450725), (54087, 399325), (79865, 270435), (90145, 239595), (122925, 175703)]