20006025

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{71}}^1$

素因数の和:131

約数の個数: 72

約数和(自身を含む): 38372544

約数和(自身を除く): 18366519

約数列:

[1, 3, 5, 13, 15, 17, 25, 39, 51, 65, 71, 75, 85, 195, 213, 221, 255, 289, 325, 355, 425, 663, 867, 923, 975, 1065, 1105, 1207, 1275, 1445, 1775, 2769, 3315, 3621, 3757, 4335, 4615, 5325, 5525, 6035, 7225, 11271, 13845, 15691, 16575, 18105, 18785, 20519, 21675, 23075, 30175, 47073, 56355, 61557, 69225, 78455, 90525, 93925, 102595, 235365, 266747, 281775, 307785, 392275, 512975, 800241, 1176825, 1333735, 1538925, 4001205, 6668675, 20006025]

約数ペア:

[(1, 20006025), (3, 6668675), (5, 4001205), (13, 1538925), (15, 1333735), (17, 1176825), (25, 800241), (39, 512975), (51, 392275), (65, 307785), (71, 281775), (75, 266747), (85, 235365), (195, 102595), (213, 93925), (221, 90525), (255, 78455), (289, 69225), (325, 61557), (355, 56355), (425, 47073), (663, 30175), (867, 23075), (923, 21675), (975, 20519), (1065, 18785), (1105, 18105), (1207, 16575), (1275, 15691), (1445, 13845), (1775, 11271), (2769, 7225), (3315, 6035), (3621, 5525), (3757, 5325), (4335, 4615)]