20859476

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{353}}^1$

素因数の和:464

約数の個数: 48

約数和(自身を含む): 42819840

約数和(自身を除く): 21960364

約数列:

[1, 2, 4, 11, 17, 22, 34, 44, 68, 79, 158, 187, 316, 353, 374, 706, 748, 869, 1343, 1412, 1738, 2686, 3476, 3883, 5372, 6001, 7766, 12002, 14773, 15532, 24004, 27887, 29546, 55774, 59092, 66011, 111548, 132022, 264044, 306757, 474079, 613514, 948158, 1227028, 1896316, 5214869, 10429738, 20859476]

約数ペア:

[(1, 20859476), (2, 10429738), (4, 5214869), (11, 1896316), (17, 1227028), (22, 948158), (34, 613514), (44, 474079), (68, 306757), (79, 264044), (158, 132022), (187, 111548), (316, 66011), (353, 59092), (374, 55774), (706, 29546), (748, 27887), (869, 24004), (1343, 15532), (1412, 14773), (1738, 12002), (2686, 7766), (3476, 6001), (3883, 5372)]