20101004

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{349}}^1$

素因数の和:399

約数の個数: 72

約数和(自身を含む): 46922400

約数和(自身を除く): 26821396

約数列:

[1, 2, 4, 7, 11, 14, 17, 22, 28, 34, 44, 68, 77, 119, 121, 154, 187, 238, 242, 308, 349, 374, 476, 484, 698, 748, 847, 1309, 1396, 1694, 2057, 2443, 2618, 3388, 3839, 4114, 4886, 5236, 5933, 7678, 8228, 9772, 11866, 14399, 15356, 23732, 26873, 28798, 41531, 42229, 53746, 57596, 65263, 83062, 84458, 107492, 130526, 166124, 168916, 261052, 295603, 456841, 591206, 717893, 913682, 1182412, 1435786, 1827364, 2871572, 5025251, 10050502, 20101004]

約数ペア:

[(1, 20101004), (2, 10050502), (4, 5025251), (7, 2871572), (11, 1827364), (14, 1435786), (17, 1182412), (22, 913682), (28, 717893), (34, 591206), (44, 456841), (68, 295603), (77, 261052), (119, 168916), (121, 166124), (154, 130526), (187, 107492), (238, 84458), (242, 83062), (308, 65263), (349, 57596), (374, 53746), (476, 42229), (484, 41531), (698, 28798), (748, 26873), (847, 23732), (1309, 15356), (1396, 14399), (1694, 11866), (2057, 9772), (2443, 8228), (2618, 7678), (3388, 5933), (3839, 5236), (4114, 4886)]