640593568

素因数分解:

$2^5\times {\mathrm{197}}^1\times {\mathrm{307}}^1\times {\mathrm{331}}^1$

素因数の和:845

約数の個数: 48

約数和(自身を含む): 1275541344

約数和(自身を除く): 634947776

約数列:

[1, 2, 4, 8, 16, 32, 197, 307, 331, 394, 614, 662, 788, 1228, 1324, 1576, 2456, 2648, 3152, 4912, 5296, 6304, 9824, 10592, 60479, 65207, 101617, 120958, 130414, 203234, 241916, 260828, 406468, 483832, 521656, 812936, 967664, 1043312, 1625872, 1935328, 2086624, 3251744, 20018549, 40037098, 80074196, 160148392, 320296784, 640593568]

約数ペア:

[(1, 640593568), (2, 320296784), (4, 160148392), (8, 80074196), (16, 40037098), (32, 20018549), (197, 3251744), (307, 2086624), (331, 1935328), (394, 1625872), (614, 1043312), (662, 967664), (788, 812936), (1228, 521656), (1324, 483832), (1576, 406468), (2456, 260828), (2648, 241916), (3152, 203234), (4912, 130414), (5296, 120958), (6304, 101617), (9824, 65207), (10592, 60479)]