20145680

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{14813}}^1$

素因数の和:14843

約数の個数: 40

約数和(自身を含む): 49597272

約数和(自身を除く): 29451592

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 14813, 29626, 59252, 74065, 118504, 148130, 237008, 251821, 296260, 503642, 592520, 1007284, 1185040, 1259105, 2014568, 2518210, 4029136, 5036420, 10072840, 20145680]

約数ペア:

[(1, 20145680), (2, 10072840), (4, 5036420), (5, 4029136), (8, 2518210), (10, 2014568), (16, 1259105), (17, 1185040), (20, 1007284), (34, 592520), (40, 503642), (68, 296260), (80, 251821), (85, 237008), (136, 148130), (170, 118504), (272, 74065), (340, 59252), (680, 29626), (1360, 14813)]