28759640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7901}}^1$

素因数の和:7932

約数の個数: 64

約数和(自身を含む): 79652160

約数和(自身を除く): 50892520

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 7901, 15802, 31604, 39505, 55307, 63208, 79010, 102713, 110614, 158020, 205426, 221228, 276535, 316040, 410852, 442456, 513565, 553070, 718991, 821704, 1027130, 1106140, 1437982, 2054260, 2212280, 2875964, 3594955, 4108520, 5751928, 7189910, 14379820, 28759640]

約数ペア:

[(1, 28759640), (2, 14379820), (4, 7189910), (5, 5751928), (7, 4108520), (8, 3594955), (10, 2875964), (13, 2212280), (14, 2054260), (20, 1437982), (26, 1106140), (28, 1027130), (35, 821704), (40, 718991), (52, 553070), (56, 513565), (65, 442456), (70, 410852), (91, 316040), (104, 276535), (130, 221228), (140, 205426), (182, 158020), (260, 110614), (280, 102713), (364, 79010), (455, 63208), (520, 55307), (728, 39505), (910, 31604), (1820, 15802), (3640, 7901)]