21109725

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1031}}^1$

素因数の和:1067

約数の個数: 72

約数和(自身を含む): 46580352

約数和(自身を除く): 25470627

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 25, 35, 39, 45, 63, 65, 75, 91, 105, 117, 175, 195, 225, 273, 315, 325, 455, 525, 585, 819, 975, 1031, 1365, 1575, 2275, 2925, 3093, 4095, 5155, 6825, 7217, 9279, 13403, 15465, 20475, 21651, 25775, 36085, 40209, 46395, 64953, 67015, 77325, 93821, 108255, 120627, 180425, 201045, 231975, 281463, 324765, 335075, 469105, 541275, 603135, 844389, 1005225, 1407315, 1623825, 2345525, 3015675, 4221945, 7036575, 21109725]

約数ペア:

[(1, 21109725), (3, 7036575), (5, 4221945), (7, 3015675), (9, 2345525), (13, 1623825), (15, 1407315), (21, 1005225), (25, 844389), (35, 603135), (39, 541275), (45, 469105), (63, 335075), (65, 324765), (75, 281463), (91, 231975), (105, 201045), (117, 180425), (175, 120627), (195, 108255), (225, 93821), (273, 77325), (315, 67015), (325, 64953), (455, 46395), (525, 40209), (585, 36085), (819, 25775), (975, 21651), (1031, 20475), (1365, 15465), (1575, 13403), (2275, 9279), (2925, 7217), (3093, 6825), (4095, 5155)]