21106976

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{983}}^1$

素因数の和:1065

約数の個数: 48

約数和(自身を含む): 46122048

約数和(自身を除く): 25015072

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 61, 88, 122, 176, 244, 352, 488, 671, 976, 983, 1342, 1952, 1966, 2684, 3932, 5368, 7864, 10736, 10813, 15728, 21472, 21626, 31456, 43252, 59963, 86504, 119926, 173008, 239852, 346016, 479704, 659593, 959408, 1319186, 1918816, 2638372, 5276744, 10553488, 21106976]

約数ペア:

[(1, 21106976), (2, 10553488), (4, 5276744), (8, 2638372), (11, 1918816), (16, 1319186), (22, 959408), (32, 659593), (44, 479704), (61, 346016), (88, 239852), (122, 173008), (176, 119926), (244, 86504), (352, 59963), (488, 43252), (671, 31456), (976, 21626), (983, 21472), (1342, 15728), (1952, 10813), (1966, 10736), (2684, 7864), (3932, 5368)]