117654920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1\times {\mathrm{397}}^1$

素因数の和:678

約数の個数: 64

約数和(自身を含む): 275097600

約数和(自身を除く): 157442680

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 239, 248, 310, 397, 478, 620, 794, 956, 1195, 1240, 1588, 1912, 1985, 2390, 3176, 3970, 4780, 7409, 7940, 9560, 12307, 14818, 15880, 24614, 29636, 37045, 49228, 59272, 61535, 74090, 94883, 98456, 123070, 148180, 189766, 246140, 296360, 379532, 474415, 492280, 759064, 948830, 1897660, 2941373, 3795320, 5882746, 11765492, 14706865, 23530984, 29413730, 58827460, 117654920]

約数ペア:

[(1, 117654920), (2, 58827460), (4, 29413730), (5, 23530984), (8, 14706865), (10, 11765492), (20, 5882746), (31, 3795320), (40, 2941373), (62, 1897660), (124, 948830), (155, 759064), (239, 492280), (248, 474415), (310, 379532), (397, 296360), (478, 246140), (620, 189766), (794, 148180), (956, 123070), (1195, 98456), (1240, 94883), (1588, 74090), (1912, 61535), (1985, 59272), (2390, 49228), (3176, 37045), (3970, 29636), (4780, 24614), (7409, 15880), (7940, 14818), (9560, 12307)]