257221260

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^2\times {\mathrm{1487}}^1$

素因数の和:1564

約数の個数: 108

約数和(自身を含む): 806760864

約数和(自身を除く): 549539604

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 62, 90, 93, 124, 155, 180, 186, 279, 310, 372, 465, 558, 620, 930, 961, 1116, 1395, 1487, 1860, 1922, 2790, 2883, 2974, 3844, 4461, 4805, 5580, 5766, 5948, 7435, 8649, 8922, 9610, 11532, 13383, 14415, 14870, 17298, 17844, 19220, 22305, 26766, 28830, 29740, 34596, 43245, 44610, 46097, 53532, 57660, 66915, 86490, 89220, 92194, 133830, 138291, 172980, 184388, 230485, 267660, 276582, 414873, 460970, 553164, 691455, 829746, 921940, 1382910, 1429007, 1659492, 2074365, 2765820, 2858014, 4148730, 4287021, 5716028, 7145035, 8297460, 8574042, 12861063, 14290070, 17148084, 21435105, 25722126, 28580140, 42870210, 51444252, 64305315, 85740420, 128610630, 257221260]

約数ペア:

[(1, 257221260), (2, 128610630), (3, 85740420), (4, 64305315), (5, 51444252), (6, 42870210), (9, 28580140), (10, 25722126), (12, 21435105), (15, 17148084), (18, 14290070), (20, 12861063), (30, 8574042), (31, 8297460), (36, 7145035), (45, 5716028), (60, 4287021), (62, 4148730), (90, 2858014), (93, 2765820), (124, 2074365), (155, 1659492), (180, 1429007), (186, 1382910), (279, 921940), (310, 829746), (372, 691455), (465, 553164), (558, 460970), (620, 414873), (930, 276582), (961, 267660), (1116, 230485), (1395, 184388), (1487, 172980), (1860, 138291), (1922, 133830), (2790, 92194), (2883, 89220), (2974, 86490), (3844, 66915), (4461, 57660), (4805, 53532), (5580, 46097), (5766, 44610), (5948, 43245), (7435, 34596), (8649, 29740), (8922, 28830), (9610, 26766), (11532, 22305), (13383, 19220), (14415, 17844), (14870, 17298)]