21012030

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17959}}^1$

素因数の和:17985

約数の個数: 48

約数和(自身を含む): 58836960

約数和(自身を除く): 37824930

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 30, 39, 45, 65, 78, 90, 117, 130, 195, 234, 390, 585, 1170, 17959, 35918, 53877, 89795, 107754, 161631, 179590, 233467, 269385, 323262, 466934, 538770, 700401, 808155, 1167335, 1400802, 1616310, 2101203, 2334670, 3502005, 4202406, 7004010, 10506015, 21012030]

約数ペア:

[(1, 21012030), (2, 10506015), (3, 7004010), (5, 4202406), (6, 3502005), (9, 2334670), (10, 2101203), (13, 1616310), (15, 1400802), (18, 1167335), (26, 808155), (30, 700401), (39, 538770), (45, 466934), (65, 323262), (78, 269385), (90, 233467), (117, 179590), (130, 161631), (195, 107754), (234, 89795), (390, 53877), (585, 35918), (1170, 17959)]