18706480

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17987}}^1$

素因数の和:18013

約数の個数: 40

約数和(自身を含む): 46840752

約数和(自身を除く): 28134272

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 17987, 35974, 71948, 89935, 143896, 179870, 233831, 287792, 359740, 467662, 719480, 935324, 1169155, 1438960, 1870648, 2338310, 3741296, 4676620, 9353240, 18706480]

約数ペア:

[(1, 18706480), (2, 9353240), (4, 4676620), (5, 3741296), (8, 2338310), (10, 1870648), (13, 1438960), (16, 1169155), (20, 935324), (26, 719480), (40, 467662), (52, 359740), (65, 287792), (80, 233831), (104, 179870), (130, 143896), (208, 89935), (260, 71948), (520, 35974), (1040, 17987)]