2021103320

素因数分解:

$2^3\times 5^1\times {\mathrm{179}}^1\times {\mathrm{439}}^1\times {\mathrm{643}}^1$

素因数の和:1272

約数の個数: 64

約数和(自身を含む): 4590432000

約数和(自身を除く): 2569328680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 179, 358, 439, 643, 716, 878, 895, 1286, 1432, 1756, 1790, 2195, 2572, 3215, 3512, 3580, 4390, 5144, 6430, 7160, 8780, 12860, 17560, 25720, 78581, 115097, 157162, 230194, 282277, 314324, 392905, 460388, 564554, 575485, 628648, 785810, 920776, 1129108, 1150970, 1411385, 1571620, 2258216, 2301940, 2822770, 3143240, 4603880, 5645540, 11291080, 50527583, 101055166, 202110332, 252637915, 404220664, 505275830, 1010551660, 2021103320]

約数ペア:

[(1, 2021103320), (2, 1010551660), (4, 505275830), (5, 404220664), (8, 252637915), (10, 202110332), (20, 101055166), (40, 50527583), (179, 11291080), (358, 5645540), (439, 4603880), (643, 3143240), (716, 2822770), (878, 2301940), (895, 2258216), (1286, 1571620), (1432, 1411385), (1756, 1150970), (1790, 1129108), (2195, 920776), (2572, 785810), (3215, 628648), (3512, 575485), (3580, 564554), (4390, 460388), (5144, 392905), (6430, 314324), (7160, 282277), (8780, 230194), (12860, 157162), (17560, 115097), (25720, 78581)]