21012660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{1091}}^1$

素因数の和:1213

約数の個数: 72

約数和(自身を含む): 64393056

約数和(自身を除く): 43380396

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 107, 180, 214, 321, 428, 535, 642, 963, 1070, 1091, 1284, 1605, 1926, 2140, 2182, 3210, 3273, 3852, 4364, 4815, 5455, 6420, 6546, 9630, 9819, 10910, 13092, 16365, 19260, 19638, 21820, 32730, 39276, 49095, 65460, 98190, 116737, 196380, 233474, 350211, 466948, 583685, 700422, 1050633, 1167370, 1400844, 1751055, 2101266, 2334740, 3502110, 4202532, 5253165, 7004220, 10506330, 21012660]

約数ペア:

[(1, 21012660), (2, 10506330), (3, 7004220), (4, 5253165), (5, 4202532), (6, 3502110), (9, 2334740), (10, 2101266), (12, 1751055), (15, 1400844), (18, 1167370), (20, 1050633), (30, 700422), (36, 583685), (45, 466948), (60, 350211), (90, 233474), (107, 196380), (180, 116737), (214, 98190), (321, 65460), (428, 49095), (535, 39276), (642, 32730), (963, 21820), (1070, 19638), (1091, 19260), (1284, 16365), (1605, 13092), (1926, 10910), (2140, 9819), (2182, 9630), (3210, 6546), (3273, 6420), (3852, 5455), (4364, 4815)]