18870540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{1861}}^1$

素因数の和:1899

約数の個数: 72

約数和(自身を含む): 57245328

約数和(自身を除く): 38374788

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 169, 195, 260, 338, 390, 507, 676, 780, 845, 1014, 1690, 1861, 2028, 2535, 3380, 3722, 5070, 5583, 7444, 9305, 10140, 11166, 18610, 22332, 24193, 27915, 37220, 48386, 55830, 72579, 96772, 111660, 120965, 145158, 241930, 290316, 314509, 362895, 483860, 629018, 725790, 943527, 1258036, 1451580, 1572545, 1887054, 3145090, 3774108, 4717635, 6290180, 9435270, 18870540]

約数ペア:

[(1, 18870540), (2, 9435270), (3, 6290180), (4, 4717635), (5, 3774108), (6, 3145090), (10, 1887054), (12, 1572545), (13, 1451580), (15, 1258036), (20, 943527), (26, 725790), (30, 629018), (39, 483860), (52, 362895), (60, 314509), (65, 290316), (78, 241930), (130, 145158), (156, 120965), (169, 111660), (195, 96772), (260, 72579), (338, 55830), (390, 48386), (507, 37220), (676, 27915), (780, 24193), (845, 22332), (1014, 18610), (1690, 11166), (1861, 10140), (2028, 9305), (2535, 7444), (3380, 5583), (3722, 5070)]