72971440

素因数分解:

$2^4\times 5^1\times {\mathrm{641}}^1\times {\mathrm{1423}}^1$

素因数の和:2077

約数の個数: 40

約数和(自身を含む): 170042688

約数和(自身を除く): 97071248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 641, 1282, 1423, 2564, 2846, 3205, 5128, 5692, 6410, 7115, 10256, 11384, 12820, 14230, 22768, 25640, 28460, 51280, 56920, 113840, 912143, 1824286, 3648572, 4560715, 7297144, 9121430, 14594288, 18242860, 36485720, 72971440]

約数ペア:

[(1, 72971440), (2, 36485720), (4, 18242860), (5, 14594288), (8, 9121430), (10, 7297144), (16, 4560715), (20, 3648572), (40, 1824286), (80, 912143), (641, 113840), (1282, 56920), (1423, 51280), (2564, 28460), (2846, 25640), (3205, 22768), (5128, 14230), (5692, 12820), (6410, 11384), (7115, 10256)]