20128980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{17657}}^1$

素因数の和:17688

約数の個数: 48

約数和(自身を含む): 59330880

約数和(自身を除く): 39201900

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 114, 190, 228, 285, 380, 570, 1140, 17657, 35314, 52971, 70628, 88285, 105942, 176570, 211884, 264855, 335483, 353140, 529710, 670966, 1006449, 1059420, 1341932, 1677415, 2012898, 3354830, 4025796, 5032245, 6709660, 10064490, 20128980]

約数ペア:

[(1, 20128980), (2, 10064490), (3, 6709660), (4, 5032245), (5, 4025796), (6, 3354830), (10, 2012898), (12, 1677415), (15, 1341932), (19, 1059420), (20, 1006449), (30, 670966), (38, 529710), (57, 353140), (60, 335483), (76, 264855), (95, 211884), (114, 176570), (190, 105942), (228, 88285), (285, 70628), (380, 52971), (570, 35314), (1140, 17657)]