128940500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{239}}^1$

素因数の和:354

約数の個数: 96

約数和(自身を含む): 308206080

約数和(自身を除く): 179265580

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 83, 100, 125, 130, 166, 239, 250, 260, 325, 332, 415, 478, 500, 650, 830, 956, 1079, 1195, 1300, 1625, 1660, 2075, 2158, 2390, 3107, 3250, 4150, 4316, 4780, 5395, 5975, 6214, 6500, 8300, 10375, 10790, 11950, 12428, 15535, 19837, 20750, 21580, 23900, 26975, 29875, 31070, 39674, 41500, 53950, 59750, 62140, 77675, 79348, 99185, 107900, 119500, 134875, 155350, 198370, 257881, 269750, 310700, 388375, 396740, 495925, 515762, 539500, 776750, 991850, 1031524, 1289405, 1553500, 1983700, 2479625, 2578810, 4959250, 5157620, 6447025, 9918500, 12894050, 25788100, 32235125, 64470250, 128940500]

約数ペア:

[(1, 128940500), (2, 64470250), (4, 32235125), (5, 25788100), (10, 12894050), (13, 9918500), (20, 6447025), (25, 5157620), (26, 4959250), (50, 2578810), (52, 2479625), (65, 1983700), (83, 1553500), (100, 1289405), (125, 1031524), (130, 991850), (166, 776750), (239, 539500), (250, 515762), (260, 495925), (325, 396740), (332, 388375), (415, 310700), (478, 269750), (500, 257881), (650, 198370), (830, 155350), (956, 134875), (1079, 119500), (1195, 107900), (1300, 99185), (1625, 79348), (1660, 77675), (2075, 62140), (2158, 59750), (2390, 53950), (3107, 41500), (3250, 39674), (4150, 31070), (4316, 29875), (4780, 26975), (5395, 23900), (5975, 21580), (6214, 20750), (6500, 19837), (8300, 15535), (10375, 12428), (10790, 11950)]