209627720

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{1621}}^1$

素因数の和:1746

約数の個数: 64

約数和(自身を含む): 488741040

約数和(自身を除く): 279113320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 61, 106, 122, 212, 244, 265, 305, 424, 488, 530, 610, 1060, 1220, 1621, 2120, 2440, 3233, 3242, 6466, 6484, 8105, 12932, 12968, 16165, 16210, 25864, 32330, 32420, 64660, 64840, 85913, 98881, 129320, 171826, 197762, 343652, 395524, 429565, 494405, 687304, 791048, 859130, 988810, 1718260, 1977620, 3436520, 3955240, 5240693, 10481386, 20962772, 26203465, 41925544, 52406930, 104813860, 209627720]

約数ペア:

[(1, 209627720), (2, 104813860), (4, 52406930), (5, 41925544), (8, 26203465), (10, 20962772), (20, 10481386), (40, 5240693), (53, 3955240), (61, 3436520), (106, 1977620), (122, 1718260), (212, 988810), (244, 859130), (265, 791048), (305, 687304), (424, 494405), (488, 429565), (530, 395524), (610, 343652), (1060, 197762), (1220, 171826), (1621, 129320), (2120, 98881), (2440, 85913), (3233, 64840), (3242, 64660), (6466, 32420), (6484, 32330), (8105, 25864), (12932, 16210), (12968, 16165)]