399476416

素因数分解:

$2^6\times {\mathrm{31}}^1\times {\mathrm{227}}^1\times {\mathrm{887}}^1$

素因数の和:1157

約数の個数: 56

約数和(自身を含む): 822813696

約数和(自身を除く): 423337280

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 227, 248, 454, 496, 887, 908, 992, 1774, 1816, 1984, 3548, 3632, 7037, 7096, 7264, 14074, 14192, 14528, 27497, 28148, 28384, 54994, 56296, 56768, 109988, 112592, 201349, 219976, 225184, 402698, 439952, 450368, 805396, 879904, 1610792, 1759808, 3221584, 6241819, 6443168, 12483638, 12886336, 24967276, 49934552, 99869104, 199738208, 399476416]

約数ペア:

[(1, 399476416), (2, 199738208), (4, 99869104), (8, 49934552), (16, 24967276), (31, 12886336), (32, 12483638), (62, 6443168), (64, 6241819), (124, 3221584), (227, 1759808), (248, 1610792), (454, 879904), (496, 805396), (887, 450368), (908, 439952), (992, 402698), (1774, 225184), (1816, 219976), (1984, 201349), (3548, 112592), (3632, 109988), (7037, 56768), (7096, 56296), (7264, 54994), (14074, 28384), (14192, 28148), (14528, 27497)]