12840440

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{821}}^1$

素因数の和:872

約数の個数: 64

約数和(自身を含む): 31959360

約数和(自身を除く): 19118920

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 23, 34, 40, 46, 68, 85, 92, 115, 136, 170, 184, 230, 340, 391, 460, 680, 782, 821, 920, 1564, 1642, 1955, 3128, 3284, 3910, 4105, 6568, 7820, 8210, 13957, 15640, 16420, 18883, 27914, 32840, 37766, 55828, 69785, 75532, 94415, 111656, 139570, 151064, 188830, 279140, 321011, 377660, 558280, 642022, 755320, 1284044, 1605055, 2568088, 3210110, 6420220, 12840440]

約数ペア:

[(1, 12840440), (2, 6420220), (4, 3210110), (5, 2568088), (8, 1605055), (10, 1284044), (17, 755320), (20, 642022), (23, 558280), (34, 377660), (40, 321011), (46, 279140), (68, 188830), (85, 151064), (92, 139570), (115, 111656), (136, 94415), (170, 75532), (184, 69785), (230, 55828), (340, 37766), (391, 32840), (460, 27914), (680, 18883), (782, 16420), (821, 15640), (920, 13957), (1564, 8210), (1642, 7820), (1955, 6568), (3128, 4105), (3284, 3910)]