21487232

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{349}}^1$

素因数の和:413

約数の個数: 64

約数和(自身を含む): 47481000

約数和(自身を除く): 25993768

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 37, 52, 64, 74, 104, 128, 148, 208, 296, 349, 416, 481, 592, 698, 832, 962, 1184, 1396, 1664, 1924, 2368, 2792, 3848, 4537, 4736, 5584, 7696, 9074, 11168, 12913, 15392, 18148, 22336, 25826, 30784, 36296, 44672, 51652, 61568, 72592, 103304, 145184, 167869, 206608, 290368, 335738, 413216, 580736, 671476, 826432, 1342952, 1652864, 2685904, 5371808, 10743616, 21487232]

約数ペア:

[(1, 21487232), (2, 10743616), (4, 5371808), (8, 2685904), (13, 1652864), (16, 1342952), (26, 826432), (32, 671476), (37, 580736), (52, 413216), (64, 335738), (74, 290368), (104, 206608), (128, 167869), (148, 145184), (208, 103304), (296, 72592), (349, 61568), (416, 51652), (481, 44672), (592, 36296), (698, 30784), (832, 25826), (962, 22336), (1184, 18148), (1396, 15392), (1664, 12913), (1924, 11168), (2368, 9074), (2792, 7696), (3848, 5584), (4537, 4736)]