21638722

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1$

素因数の和:175

約数の個数: 64

約数和(自身を含む): 42301440

約数和(自身を除く): 20662718

約数列:

[1, 2, 7, 14, 17, 23, 34, 46, 59, 67, 118, 119, 134, 161, 238, 322, 391, 413, 469, 782, 826, 938, 1003, 1139, 1357, 1541, 2006, 2278, 2714, 2737, 3082, 3953, 5474, 7021, 7906, 7973, 9499, 10787, 14042, 15946, 18998, 21574, 23069, 26197, 27671, 46138, 52394, 55342, 67201, 90919, 134402, 161483, 181838, 183379, 322966, 366758, 470407, 636433, 940814, 1272866, 1545623, 3091246, 10819361, 21638722]

約数ペア:

[(1, 21638722), (2, 10819361), (7, 3091246), (14, 1545623), (17, 1272866), (23, 940814), (34, 636433), (46, 470407), (59, 366758), (67, 322966), (118, 183379), (119, 181838), (134, 161483), (161, 134402), (238, 90919), (322, 67201), (391, 55342), (413, 52394), (469, 46138), (782, 27671), (826, 26197), (938, 23069), (1003, 21574), (1139, 18998), (1357, 15946), (1541, 14042), (2006, 10787), (2278, 9499), (2714, 7973), (2737, 7906), (3082, 7021), (3953, 5474)]