28974920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{55721}}^1$

素因数の和:55745

約数の個数: 32

約数和(自身を含む): 70209720

約数和(自身を除く): 41234800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 55721, 111442, 222884, 278605, 445768, 557210, 724373, 1114420, 1448746, 2228840, 2897492, 3621865, 5794984, 7243730, 14487460, 28974920]

約数ペア:

[(1, 28974920), (2, 14487460), (4, 7243730), (5, 5794984), (8, 3621865), (10, 2897492), (13, 2228840), (20, 1448746), (26, 1114420), (40, 724373), (52, 557210), (65, 445768), (104, 278605), (130, 222884), (260, 111442), (520, 55721)]