20418972

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{181}}^1$

素因数の和:291

約数の個数: 96

約数和(自身を含む): 58705920

約数和(自身を除く): 38286948

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 17, 21, 28, 34, 42, 51, 68, 79, 84, 102, 119, 158, 181, 204, 237, 238, 316, 357, 362, 474, 476, 543, 553, 714, 724, 948, 1086, 1106, 1267, 1343, 1428, 1659, 2172, 2212, 2534, 2686, 3077, 3318, 3801, 4029, 5068, 5372, 6154, 6636, 7602, 8058, 9231, 9401, 12308, 14299, 15204, 16116, 18462, 18802, 21539, 28203, 28598, 36924, 37604, 42897, 43078, 56406, 57196, 64617, 85794, 86156, 100093, 112812, 129234, 171588, 200186, 243083, 258468, 300279, 400372, 486166, 600558, 729249, 972332, 1201116, 1458498, 1701581, 2916996, 3403162, 5104743, 6806324, 10209486, 20418972]

約数ペア:

[(1, 20418972), (2, 10209486), (3, 6806324), (4, 5104743), (6, 3403162), (7, 2916996), (12, 1701581), (14, 1458498), (17, 1201116), (21, 972332), (28, 729249), (34, 600558), (42, 486166), (51, 400372), (68, 300279), (79, 258468), (84, 243083), (102, 200186), (119, 171588), (158, 129234), (181, 112812), (204, 100093), (237, 86156), (238, 85794), (316, 64617), (357, 57196), (362, 56406), (474, 43078), (476, 42897), (543, 37604), (553, 36924), (714, 28598), (724, 28203), (948, 21539), (1086, 18802), (1106, 18462), (1267, 16116), (1343, 15204), (1428, 14299), (1659, 12308), (2172, 9401), (2212, 9231), (2534, 8058), (2686, 7602), (3077, 6636), (3318, 6154), (3801, 5372), (4029, 5068)]