665367625

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1$

素因数の和:251

約数の個数: 64

約数和(自身を含む): 930908160

約数和(自身を除く): 265540535

約数列:

[1, 5, 13, 25, 65, 71, 73, 79, 125, 325, 355, 365, 395, 923, 949, 1027, 1625, 1775, 1825, 1975, 4615, 4745, 5135, 5183, 5609, 5767, 8875, 9125, 9875, 23075, 23725, 25675, 25915, 28045, 28835, 67379, 72917, 74971, 115375, 118625, 128375, 129575, 140225, 144175, 336895, 364585, 374855, 409457, 647875, 701125, 720875, 1684475, 1822925, 1874275, 2047285, 5322941, 8422375, 9114625, 9371375, 10236425, 26614705, 51182125, 133073525, 665367625]

約数ペア:

[(1, 665367625), (5, 133073525), (13, 51182125), (25, 26614705), (65, 10236425), (71, 9371375), (73, 9114625), (79, 8422375), (125, 5322941), (325, 2047285), (355, 1874275), (365, 1822925), (395, 1684475), (923, 720875), (949, 701125), (1027, 647875), (1625, 409457), (1775, 374855), (1825, 364585), (1975, 336895), (4615, 144175), (4745, 140225), (5135, 129575), (5183, 128375), (5609, 118625), (5767, 115375), (8875, 74971), (9125, 72917), (9875, 67379), (23075, 28835), (23725, 28045), (25675, 25915)]