131428840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{1277}}^1$

素因数の和:1402

約数の個数: 64

約数和(自身を含む): 309173760

約数和(自身を除く): 177744920

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 83, 124, 155, 166, 248, 310, 332, 415, 620, 664, 830, 1240, 1277, 1660, 2554, 2573, 3320, 5108, 5146, 6385, 10216, 10292, 12770, 12865, 20584, 25540, 25730, 39587, 51080, 51460, 79174, 102920, 105991, 158348, 197935, 211982, 316696, 395870, 423964, 529955, 791740, 847928, 1059910, 1583480, 2119820, 3285721, 4239640, 6571442, 13142884, 16428605, 26285768, 32857210, 65714420, 131428840]

約数ペア:

[(1, 131428840), (2, 65714420), (4, 32857210), (5, 26285768), (8, 16428605), (10, 13142884), (20, 6571442), (31, 4239640), (40, 3285721), (62, 2119820), (83, 1583480), (124, 1059910), (155, 847928), (166, 791740), (248, 529955), (310, 423964), (332, 395870), (415, 316696), (620, 211982), (664, 197935), (830, 158348), (1240, 105991), (1277, 102920), (1660, 79174), (2554, 51460), (2573, 51080), (3320, 39587), (5108, 25730), (5146, 25540), (6385, 20584), (10216, 12865), (10292, 12770)]