81573760

素因数分解:

$2^7\times 5^1\times {\mathrm{197}}^1\times {\mathrm{647}}^1$

素因数の和:863

約数の個数: 64

約数和(自身を含む): 196305120

約数和(自身を除く): 114731360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 197, 320, 394, 640, 647, 788, 985, 1294, 1576, 1970, 2588, 3152, 3235, 3940, 5176, 6304, 6470, 7880, 10352, 12608, 12940, 15760, 20704, 25216, 25880, 31520, 41408, 51760, 63040, 82816, 103520, 126080, 127459, 207040, 254918, 414080, 509836, 637295, 1019672, 1274590, 2039344, 2549180, 4078688, 5098360, 8157376, 10196720, 16314752, 20393440, 40786880, 81573760]

約数ペア:

[(1, 81573760), (2, 40786880), (4, 20393440), (5, 16314752), (8, 10196720), (10, 8157376), (16, 5098360), (20, 4078688), (32, 2549180), (40, 2039344), (64, 1274590), (80, 1019672), (128, 637295), (160, 509836), (197, 414080), (320, 254918), (394, 207040), (640, 127459), (647, 126080), (788, 103520), (985, 82816), (1294, 63040), (1576, 51760), (1970, 41408), (2588, 31520), (3152, 25880), (3235, 25216), (3940, 20704), (5176, 15760), (6304, 12940), (6470, 12608), (7880, 10352)]