20011904

素因数分解:

$2^7\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{233}}^1$

素因数の和:319

約数の個数: 64

約数和(自身を含む): 44394480

約数和(自身を除く): 24382576

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 61, 64, 88, 122, 128, 176, 233, 244, 352, 466, 488, 671, 704, 932, 976, 1342, 1408, 1864, 1952, 2563, 2684, 3728, 3904, 5126, 5368, 7456, 7808, 10252, 10736, 14213, 14912, 20504, 21472, 28426, 29824, 41008, 42944, 56852, 82016, 85888, 113704, 156343, 164032, 227408, 312686, 328064, 454816, 625372, 909632, 1250744, 1819264, 2501488, 5002976, 10005952, 20011904]

約数ペア:

[(1, 20011904), (2, 10005952), (4, 5002976), (8, 2501488), (11, 1819264), (16, 1250744), (22, 909632), (32, 625372), (44, 454816), (61, 328064), (64, 312686), (88, 227408), (122, 164032), (128, 156343), (176, 113704), (233, 85888), (244, 82016), (352, 56852), (466, 42944), (488, 41008), (671, 29824), (704, 28426), (932, 21472), (976, 20504), (1342, 14912), (1408, 14213), (1864, 10736), (1952, 10252), (2563, 7808), (2684, 7456), (3728, 5368), (3904, 5126)]