180989840

素因数分解:

$2^4\times 5^1\times {\mathrm{113}}^1\times {\mathrm{20021}}^1$

素因数の和:20147

約数の個数: 40

約数和(自身を含む): 424546488

約数和(自身を除く): 243556648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 113, 226, 452, 565, 904, 1130, 1808, 2260, 4520, 9040, 20021, 40042, 80084, 100105, 160168, 200210, 320336, 400420, 800840, 1601680, 2262373, 4524746, 9049492, 11311865, 18098984, 22623730, 36197968, 45247460, 90494920, 180989840]

約数ペア:

[(1, 180989840), (2, 90494920), (4, 45247460), (5, 36197968), (8, 22623730), (10, 18098984), (16, 11311865), (20, 9049492), (40, 4524746), (80, 2262373), (113, 1601680), (226, 800840), (452, 400420), (565, 320336), (904, 200210), (1130, 160168), (1808, 100105), (2260, 80084), (4520, 40042), (9040, 20021)]