20256020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{883}}^1$

素因数の和:960

約数の個数: 48

約数和(自身を含む): 45147648

約数和(自身を除く): 24891628

約数列:

[1, 2, 4, 5, 10, 20, 31, 37, 62, 74, 124, 148, 155, 185, 310, 370, 620, 740, 883, 1147, 1766, 2294, 3532, 4415, 4588, 5735, 8830, 11470, 17660, 22940, 27373, 32671, 54746, 65342, 109492, 130684, 136865, 163355, 273730, 326710, 547460, 653420, 1012801, 2025602, 4051204, 5064005, 10128010, 20256020]

約数ペア:

[(1, 20256020), (2, 10128010), (4, 5064005), (5, 4051204), (10, 2025602), (20, 1012801), (31, 653420), (37, 547460), (62, 326710), (74, 273730), (124, 163355), (148, 136865), (155, 130684), (185, 109492), (310, 65342), (370, 54746), (620, 32671), (740, 27373), (883, 22940), (1147, 17660), (1766, 11470), (2294, 8830), (3532, 5735), (4415, 4588)]