21552180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27631}}^1$

素因数の和:27656

約数の個数: 48

約数和(自身を含む): 64990464

約数和(自身を除く): 43438284

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 27631, 55262, 82893, 110524, 138155, 165786, 276310, 331572, 359203, 414465, 552620, 718406, 828930, 1077609, 1436812, 1657860, 1796015, 2155218, 3592030, 4310436, 5388045, 7184060, 10776090, 21552180]

約数ペア:

[(1, 21552180), (2, 10776090), (3, 7184060), (4, 5388045), (5, 4310436), (6, 3592030), (10, 2155218), (12, 1796015), (13, 1657860), (15, 1436812), (20, 1077609), (26, 828930), (30, 718406), (39, 552620), (52, 414465), (60, 359203), (65, 331572), (78, 276310), (130, 165786), (156, 138155), (195, 110524), (260, 82893), (390, 55262), (780, 27631)]