20415918

素因数分解:

$2^1\times 3^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1$

素因数の和:217

約数の個数: 64

約数和(自身を含む): 45619200

約数和(自身を除く): 25203282

約数列:

[1, 2, 3, 6, 19, 31, 38, 53, 57, 62, 93, 106, 109, 114, 159, 186, 218, 318, 327, 589, 654, 1007, 1178, 1643, 1767, 2014, 2071, 3021, 3286, 3379, 3534, 4142, 4929, 5777, 6042, 6213, 6758, 9858, 10137, 11554, 12426, 17331, 20274, 31217, 34662, 62434, 64201, 93651, 109763, 128402, 179087, 187302, 192603, 219526, 329289, 358174, 385206, 537261, 658578, 1074522, 3402653, 6805306, 10207959, 20415918]

約数ペア:

[(1, 20415918), (2, 10207959), (3, 6805306), (6, 3402653), (19, 1074522), (31, 658578), (38, 537261), (53, 385206), (57, 358174), (62, 329289), (93, 219526), (106, 192603), (109, 187302), (114, 179087), (159, 128402), (186, 109763), (218, 93651), (318, 64201), (327, 62434), (589, 34662), (654, 31217), (1007, 20274), (1178, 17331), (1643, 12426), (1767, 11554), (2014, 10137), (2071, 9858), (3021, 6758), (3286, 6213), (3379, 6042), (3534, 5777), (4142, 4929)]