21575944

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{179}}^1$

素因数の和:278

約数の個数: 64

約数和(自身を含む): 46872000

約数和(自身を除く): 25296056

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 61, 76, 104, 122, 152, 179, 244, 247, 358, 488, 494, 716, 793, 988, 1159, 1432, 1586, 1976, 2318, 2327, 3172, 3401, 4636, 4654, 6344, 6802, 9272, 9308, 10919, 13604, 15067, 18616, 21838, 27208, 30134, 43676, 44213, 60268, 87352, 88426, 120536, 141947, 176852, 207461, 283894, 353704, 414922, 567788, 829844, 1135576, 1659688, 2696993, 5393986, 10787972, 21575944]

約数ペア:

[(1, 21575944), (2, 10787972), (4, 5393986), (8, 2696993), (13, 1659688), (19, 1135576), (26, 829844), (38, 567788), (52, 414922), (61, 353704), (76, 283894), (104, 207461), (122, 176852), (152, 141947), (179, 120536), (244, 88426), (247, 87352), (358, 60268), (488, 44213), (494, 43676), (716, 30134), (793, 27208), (988, 21838), (1159, 18616), (1432, 15067), (1586, 13604), (1976, 10919), (2318, 9308), (2327, 9272), (3172, 6802), (3401, 6344), (4636, 4654)]