61782020

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{569}}^1$

素因数の和:728

約数の個数: 48

約数和(自身を含む): 133585200

約数和(自身を除く): 71803180

約数列:

[1, 2, 4, 5, 10, 20, 61, 89, 122, 178, 244, 305, 356, 445, 569, 610, 890, 1138, 1220, 1780, 2276, 2845, 5429, 5690, 10858, 11380, 21716, 27145, 34709, 50641, 54290, 69418, 101282, 108580, 138836, 173545, 202564, 253205, 347090, 506410, 694180, 1012820, 3089101, 6178202, 12356404, 15445505, 30891010, 61782020]

約数ペア:

[(1, 61782020), (2, 30891010), (4, 15445505), (5, 12356404), (10, 6178202), (20, 3089101), (61, 1012820), (89, 694180), (122, 506410), (178, 347090), (244, 253205), (305, 202564), (356, 173545), (445, 138836), (569, 108580), (610, 101282), (890, 69418), (1138, 54290), (1220, 50641), (1780, 34709), (2276, 27145), (2845, 21716), (5429, 11380), (5690, 10858)]