19993760

素因数分解:

$2^5\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:214

約数の個数: 96

約数和(自身を含む): 50803200

約数和(自身を除く): 30809440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 31, 32, 40, 58, 62, 80, 116, 124, 139, 145, 155, 160, 232, 248, 278, 290, 310, 464, 496, 556, 580, 620, 695, 899, 928, 992, 1112, 1160, 1240, 1390, 1798, 2224, 2320, 2480, 2780, 3596, 4031, 4309, 4448, 4495, 4640, 4960, 5560, 7192, 8062, 8618, 8990, 11120, 14384, 16124, 17236, 17980, 20155, 21545, 22240, 28768, 32248, 34472, 35960, 40310, 43090, 64496, 68944, 71920, 80620, 86180, 124961, 128992, 137888, 143840, 161240, 172360, 249922, 322480, 344720, 499844, 624805, 644960, 689440, 999688, 1249610, 1999376, 2499220, 3998752, 4998440, 9996880, 19993760]

約数ペア:

[(1, 19993760), (2, 9996880), (4, 4998440), (5, 3998752), (8, 2499220), (10, 1999376), (16, 1249610), (20, 999688), (29, 689440), (31, 644960), (32, 624805), (40, 499844), (58, 344720), (62, 322480), (80, 249922), (116, 172360), (124, 161240), (139, 143840), (145, 137888), (155, 128992), (160, 124961), (232, 86180), (248, 80620), (278, 71920), (290, 68944), (310, 64496), (464, 43090), (496, 40310), (556, 35960), (580, 34472), (620, 32248), (695, 28768), (899, 22240), (928, 21545), (992, 20155), (1112, 17980), (1160, 17236), (1240, 16124), (1390, 14384), (1798, 11120), (2224, 8990), (2320, 8618), (2480, 8062), (2780, 7192), (3596, 5560), (4031, 4960), (4309, 4640), (4448, 4495)]