19298368

素因数分解:

$2^6\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1$

素因数の和:251

約数の個数: 56

約数和(自身を含む): 40379904

約数和(自身を除く): 21081536

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 71, 124, 137, 142, 248, 274, 284, 496, 548, 568, 992, 1096, 1136, 1984, 2192, 2201, 2272, 4247, 4384, 4402, 4544, 8494, 8768, 8804, 9727, 16988, 17608, 19454, 33976, 35216, 38908, 67952, 70432, 77816, 135904, 140864, 155632, 271808, 301537, 311264, 603074, 622528, 1206148, 2412296, 4824592, 9649184, 19298368]

約数ペア:

[(1, 19298368), (2, 9649184), (4, 4824592), (8, 2412296), (16, 1206148), (31, 622528), (32, 603074), (62, 311264), (64, 301537), (71, 271808), (124, 155632), (137, 140864), (142, 135904), (248, 77816), (274, 70432), (284, 67952), (496, 38908), (548, 35216), (568, 33976), (992, 19454), (1096, 17608), (1136, 16988), (1984, 9727), (2192, 8804), (2201, 8768), (2272, 8494), (4247, 4544), (4384, 4402)]