28687540

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{73}}^1\times {\mathrm{401}}^1$

素因数の和:497

約数の個数: 72

約数和(自身を含む): 71216712

約数和(自身を除く): 42529172

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 73, 98, 140, 146, 196, 245, 292, 365, 401, 490, 511, 730, 802, 980, 1022, 1460, 1604, 2005, 2044, 2555, 2807, 3577, 4010, 5110, 5614, 7154, 8020, 10220, 11228, 14035, 14308, 17885, 19649, 28070, 29273, 35770, 39298, 56140, 58546, 71540, 78596, 98245, 117092, 146365, 196490, 204911, 292730, 392980, 409822, 585460, 819644, 1024555, 1434377, 2049110, 2868754, 4098220, 5737508, 7171885, 14343770, 28687540]

約数ペア:

[(1, 28687540), (2, 14343770), (4, 7171885), (5, 5737508), (7, 4098220), (10, 2868754), (14, 2049110), (20, 1434377), (28, 1024555), (35, 819644), (49, 585460), (70, 409822), (73, 392980), (98, 292730), (140, 204911), (146, 196490), (196, 146365), (245, 117092), (292, 98245), (365, 78596), (401, 71540), (490, 58546), (511, 56140), (730, 39298), (802, 35770), (980, 29273), (1022, 28070), (1460, 19649), (1604, 17885), (2005, 14308), (2044, 14035), (2555, 11228), (2807, 10220), (3577, 8020), (4010, 7154), (5110, 5614)]