396740000

素因数分解:

$2^5\times 5^4\times {\mathrm{83}}^1\times {\mathrm{239}}^1$

素因数の和:352

約数の個数: 120

約数和(自身を含む): 991932480

約数和(自身を除く): 595192480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 83, 100, 125, 160, 166, 200, 239, 250, 332, 400, 415, 478, 500, 625, 664, 800, 830, 956, 1000, 1195, 1250, 1328, 1660, 1912, 2000, 2075, 2390, 2500, 2656, 3320, 3824, 4000, 4150, 4780, 5000, 5975, 6640, 7648, 8300, 9560, 10000, 10375, 11950, 13280, 16600, 19120, 19837, 20000, 20750, 23900, 29875, 33200, 38240, 39674, 41500, 47800, 51875, 59750, 66400, 79348, 83000, 95600, 99185, 103750, 119500, 149375, 158696, 166000, 191200, 198370, 207500, 239000, 298750, 317392, 332000, 396740, 415000, 478000, 495925, 597500, 634784, 793480, 830000, 956000, 991850, 1195000, 1586960, 1660000, 1983700, 2390000, 2479625, 3173920, 3967400, 4780000, 4959250, 7934800, 9918500, 12398125, 15869600, 19837000, 24796250, 39674000, 49592500, 79348000, 99185000, 198370000, 396740000]

約数ペア:

[(1, 396740000), (2, 198370000), (4, 99185000), (5, 79348000), (8, 49592500), (10, 39674000), (16, 24796250), (20, 19837000), (25, 15869600), (32, 12398125), (40, 9918500), (50, 7934800), (80, 4959250), (83, 4780000), (100, 3967400), (125, 3173920), (160, 2479625), (166, 2390000), (200, 1983700), (239, 1660000), (250, 1586960), (332, 1195000), (400, 991850), (415, 956000), (478, 830000), (500, 793480), (625, 634784), (664, 597500), (800, 495925), (830, 478000), (956, 415000), (1000, 396740), (1195, 332000), (1250, 317392), (1328, 298750), (1660, 239000), (1912, 207500), (2000, 198370), (2075, 191200), (2390, 166000), (2500, 158696), (2656, 149375), (3320, 119500), (3824, 103750), (4000, 99185), (4150, 95600), (4780, 83000), (5000, 79348), (5975, 66400), (6640, 59750), (7648, 51875), (8300, 47800), (9560, 41500), (10000, 39674), (10375, 38240), (11950, 33200), (13280, 29875), (16600, 23900), (19120, 20750), (19837, 20000)]