20870696

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1993}}^1$

素因数の和:2034

約数の個数: 64

約数和(自身を含む): 51684480

約数和(自身を除く): 30813784

約数列:

[1, 2, 4, 7, 8, 11, 14, 17, 22, 28, 34, 44, 56, 68, 77, 88, 119, 136, 154, 187, 238, 308, 374, 476, 616, 748, 952, 1309, 1496, 1993, 2618, 3986, 5236, 7972, 10472, 13951, 15944, 21923, 27902, 33881, 43846, 55804, 67762, 87692, 111608, 135524, 153461, 175384, 237167, 271048, 306922, 372691, 474334, 613844, 745382, 948668, 1227688, 1490764, 1897336, 2608837, 2981528, 5217674, 10435348, 20870696]

約数ペア:

[(1, 20870696), (2, 10435348), (4, 5217674), (7, 2981528), (8, 2608837), (11, 1897336), (14, 1490764), (17, 1227688), (22, 948668), (28, 745382), (34, 613844), (44, 474334), (56, 372691), (68, 306922), (77, 271048), (88, 237167), (119, 175384), (136, 153461), (154, 135524), (187, 111608), (238, 87692), (308, 67762), (374, 55804), (476, 43846), (616, 33881), (748, 27902), (952, 21923), (1309, 15944), (1496, 13951), (1993, 10472), (2618, 7972), (3986, 5236)]