19863540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{523}}^1$

素因数の和:749

約数の個数: 72

約数和(自身を含む): 60654048

約数和(自身を除く): 40790508

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 211, 422, 523, 633, 844, 1046, 1055, 1266, 1569, 1899, 2092, 2110, 2532, 2615, 3138, 3165, 3798, 4220, 4707, 5230, 6276, 6330, 7596, 7845, 9414, 9495, 10460, 12660, 15690, 18828, 18990, 23535, 31380, 37980, 47070, 94140, 110353, 220706, 331059, 441412, 551765, 662118, 993177, 1103530, 1324236, 1655295, 1986354, 2207060, 3310590, 3972708, 4965885, 6621180, 9931770, 19863540]

約数ペア:

[(1, 19863540), (2, 9931770), (3, 6621180), (4, 4965885), (5, 3972708), (6, 3310590), (9, 2207060), (10, 1986354), (12, 1655295), (15, 1324236), (18, 1103530), (20, 993177), (30, 662118), (36, 551765), (45, 441412), (60, 331059), (90, 220706), (180, 110353), (211, 94140), (422, 47070), (523, 37980), (633, 31380), (844, 23535), (1046, 18990), (1055, 18828), (1266, 15690), (1569, 12660), (1899, 10460), (2092, 9495), (2110, 9414), (2532, 7845), (2615, 7596), (3138, 6330), (3165, 6276), (3798, 5230), (4220, 4707)]