491942720

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{491}}^1$

素因数の和:640

約数の個数: 112

約数和(自身を含む): 1223686656

約数和(自身を除く): 731743936

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 101, 124, 155, 160, 202, 248, 310, 320, 404, 491, 496, 505, 620, 808, 982, 992, 1010, 1240, 1616, 1964, 1984, 2020, 2455, 2480, 3131, 3232, 3928, 4040, 4910, 4960, 6262, 6464, 7856, 8080, 9820, 9920, 12524, 15221, 15655, 15712, 16160, 19640, 25048, 30442, 31310, 31424, 32320, 39280, 49591, 50096, 60884, 62620, 76105, 78560, 99182, 100192, 121768, 125240, 152210, 157120, 198364, 200384, 243536, 247955, 250480, 304420, 396728, 487072, 495910, 500960, 608840, 793456, 974144, 991820, 1001920, 1217680, 1537321, 1586912, 1983640, 2435360, 3074642, 3173824, 3967280, 4870720, 6149284, 7686605, 7934560, 12298568, 15373210, 15869120, 24597136, 30746420, 49194272, 61492840, 98388544, 122985680, 245971360, 491942720]

約数ペア:

[(1, 491942720), (2, 245971360), (4, 122985680), (5, 98388544), (8, 61492840), (10, 49194272), (16, 30746420), (20, 24597136), (31, 15869120), (32, 15373210), (40, 12298568), (62, 7934560), (64, 7686605), (80, 6149284), (101, 4870720), (124, 3967280), (155, 3173824), (160, 3074642), (202, 2435360), (248, 1983640), (310, 1586912), (320, 1537321), (404, 1217680), (491, 1001920), (496, 991820), (505, 974144), (620, 793456), (808, 608840), (982, 500960), (992, 495910), (1010, 487072), (1240, 396728), (1616, 304420), (1964, 250480), (1984, 247955), (2020, 243536), (2455, 200384), (2480, 198364), (3131, 157120), (3232, 152210), (3928, 125240), (4040, 121768), (4910, 100192), (4960, 99182), (6262, 78560), (6464, 76105), (7856, 62620), (8080, 60884), (9820, 50096), (9920, 49591), (12524, 39280), (15221, 32320), (15655, 31424), (15712, 31310), (16160, 30442), (19640, 25048)]