21420052225

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{5393}}^1$

素因数の和:5539

約数の個数: 72

約数和(自身を含む): 31757951736

約数和(自身を除く): 10337899511

約数列:

[1, 5, 11, 13, 25, 55, 65, 101, 121, 143, 275, 325, 505, 605, 715, 1111, 1313, 1573, 2525, 3025, 3575, 5393, 5555, 6565, 7865, 12221, 14443, 26965, 27775, 32825, 39325, 59323, 61105, 70109, 72215, 134825, 158873, 296615, 305525, 350545, 361075, 544693, 652553, 771199, 794365, 1483075, 1752725, 2723465, 3262765, 3855995, 3971825, 5991623, 7081009, 8483189, 13617325, 16313825, 19279975, 29958115, 35405045, 42415945, 65907853, 77891099, 149790575, 177025225, 212079725, 329539265, 389455495, 856802089, 1647696325, 1947277475, 4284010445, 21420052225]

約数ペア:

[(1, 21420052225), (5, 4284010445), (11, 1947277475), (13, 1647696325), (25, 856802089), (55, 389455495), (65, 329539265), (101, 212079725), (121, 177025225), (143, 149790575), (275, 77891099), (325, 65907853), (505, 42415945), (605, 35405045), (715, 29958115), (1111, 19279975), (1313, 16313825), (1573, 13617325), (2525, 8483189), (3025, 7081009), (3575, 5991623), (5393, 3971825), (5555, 3855995), (6565, 3262765), (7865, 2723465), (12221, 1752725), (14443, 1483075), (26965, 794365), (27775, 771199), (32825, 652553), (39325, 544693), (59323, 361075), (61105, 350545), (70109, 305525), (72215, 296615), (134825, 158873)]