278500880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{497323}}^1$

素因数の和:497343

約数の個数: 40

約数和(自身を含む): 740018112

約数和(自身を除く): 461517232

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 497323, 994646, 1989292, 2486615, 3481261, 3978584, 4973230, 6962522, 7957168, 9946460, 13925044, 17406305, 19892920, 27850088, 34812610, 39785840, 55700176, 69625220, 139250440, 278500880]

約数ペア:

[(1, 278500880), (2, 139250440), (4, 69625220), (5, 55700176), (7, 39785840), (8, 34812610), (10, 27850088), (14, 19892920), (16, 17406305), (20, 13925044), (28, 9946460), (35, 7957168), (40, 6962522), (56, 4973230), (70, 3978584), (80, 3481261), (112, 2486615), (140, 1989292), (280, 994646), (560, 497323)]