397996900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{641}}^1\times {\mathrm{887}}^1$

素因数の和:1549

約数の個数: 72

約数和(自身を含む): 989686656

約数和(自身を除く): 591689756

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 175, 350, 641, 700, 887, 1282, 1774, 2564, 3205, 3548, 4435, 4487, 6209, 6410, 8870, 8974, 12418, 12820, 16025, 17740, 17948, 22175, 22435, 24836, 31045, 32050, 44350, 44870, 62090, 64100, 88700, 89740, 112175, 124180, 155225, 224350, 310450, 448700, 568567, 620900, 1137134, 2274268, 2842835, 3979969, 5685670, 7959938, 11371340, 14214175, 15919876, 19899845, 28428350, 39799690, 56856700, 79599380, 99499225, 198998450, 397996900]

約数ペア:

[(1, 397996900), (2, 198998450), (4, 99499225), (5, 79599380), (7, 56856700), (10, 39799690), (14, 28428350), (20, 19899845), (25, 15919876), (28, 14214175), (35, 11371340), (50, 7959938), (70, 5685670), (100, 3979969), (140, 2842835), (175, 2274268), (350, 1137134), (641, 620900), (700, 568567), (887, 448700), (1282, 310450), (1774, 224350), (2564, 155225), (3205, 124180), (3548, 112175), (4435, 89740), (4487, 88700), (6209, 64100), (6410, 62090), (8870, 44870), (8974, 44350), (12418, 32050), (12820, 31045), (16025, 24836), (17740, 22435), (17948, 22175)]