280135375

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1$

素因数の和:209

約数の個数: 64

約数和(自身を含む): 399200256

約数和(自身を除く): 119064881

約数列:

[1, 5, 13, 25, 31, 65, 67, 83, 125, 155, 325, 335, 403, 415, 775, 871, 1079, 1625, 1675, 2015, 2075, 2077, 2573, 3875, 4355, 5395, 5561, 8375, 10075, 10375, 10385, 12865, 21775, 26975, 27001, 27805, 33449, 50375, 51925, 64325, 72293, 108875, 134875, 135005, 139025, 167245, 172391, 259625, 321625, 361465, 675025, 695125, 836225, 861955, 1807325, 2241083, 3375125, 4181125, 4309775, 9036625, 11205415, 21548875, 56027075, 280135375]

約数ペア:

[(1, 280135375), (5, 56027075), (13, 21548875), (25, 11205415), (31, 9036625), (65, 4309775), (67, 4181125), (83, 3375125), (125, 2241083), (155, 1807325), (325, 861955), (335, 836225), (403, 695125), (415, 675025), (775, 361465), (871, 321625), (1079, 259625), (1625, 172391), (1675, 167245), (2015, 139025), (2075, 135005), (2077, 134875), (2573, 108875), (3875, 72293), (4355, 64325), (5395, 51925), (5561, 50375), (8375, 33449), (10075, 27805), (10375, 27001), (10385, 26975), (12865, 21775)]