2189840

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{883}}^1$

素因数の和:927

約数の個数: 40

約数和(自身を含む): 5261568

約数和(自身を除く): 3071728

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 883, 1240, 1766, 2480, 3532, 4415, 7064, 8830, 14128, 17660, 27373, 35320, 54746, 70640, 109492, 136865, 218984, 273730, 437968, 547460, 1094920, 2189840]

約数ペア:

[(1, 2189840), (2, 1094920), (4, 547460), (5, 437968), (8, 273730), (10, 218984), (16, 136865), (20, 109492), (31, 70640), (40, 54746), (62, 35320), (80, 27373), (124, 17660), (155, 14128), (248, 8830), (310, 7064), (496, 4415), (620, 3532), (883, 2480), (1240, 1766)]