20028285

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{523}}^1$

素因数の和:594

約数の個数: 48

約数和(自身を含む): 37275264

約数和(自身を除く): 17246979

約数列:

[1, 3, 5, 9, 15, 23, 37, 45, 69, 111, 115, 185, 207, 333, 345, 523, 555, 851, 1035, 1569, 1665, 2553, 2615, 4255, 4707, 7659, 7845, 12029, 12765, 19351, 23535, 36087, 38295, 58053, 60145, 96755, 108261, 174159, 180435, 290265, 445073, 541305, 870795, 1335219, 2225365, 4005657, 6676095, 20028285]

約数ペア:

[(1, 20028285), (3, 6676095), (5, 4005657), (9, 2225365), (15, 1335219), (23, 870795), (37, 541305), (45, 445073), (69, 290265), (111, 180435), (115, 174159), (185, 108261), (207, 96755), (333, 60145), (345, 58053), (523, 38295), (555, 36087), (851, 23535), (1035, 19351), (1569, 12765), (1665, 12029), (2553, 7845), (2615, 7659), (4255, 4707)]