18915780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{24251}}^1$

素因数の和:24276

約数の個数: 48

約数和(自身を含む): 57040704

約数和(自身を除く): 38124924

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, 24251, 48502, 72753, 97004, 121255, 145506, 242510, 291012, 315263, 363765, 485020, 630526, 727530, 945789, 1261052, 1455060, 1576315, 1891578, 3152630, 3783156, 4728945, 6305260, 9457890, 18915780]

約数ペア:

[(1, 18915780), (2, 9457890), (3, 6305260), (4, 4728945), (5, 3783156), (6, 3152630), (10, 1891578), (12, 1576315), (13, 1455060), (15, 1261052), (20, 945789), (26, 727530), (30, 630526), (39, 485020), (52, 363765), (60, 315263), (65, 291012), (78, 242510), (130, 145506), (156, 121255), (195, 97004), (260, 72753), (390, 48502), (780, 24251)]