20966270

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{179}}^1$

素因数の和:269

約数の個数: 64

約数和(自身を含む): 44089920

約数和(自身を除く): 23123650

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 53, 65, 85, 106, 130, 170, 179, 221, 265, 358, 442, 530, 689, 895, 901, 1105, 1378, 1790, 1802, 2210, 2327, 3043, 3445, 4505, 4654, 6086, 6890, 9010, 9487, 11635, 11713, 15215, 18974, 23270, 23426, 30430, 39559, 47435, 58565, 79118, 94870, 117130, 123331, 161279, 197795, 246662, 322558, 395590, 616655, 806395, 1233310, 1612790, 2096627, 4193254, 10483135, 20966270]

約数ペア:

[(1, 20966270), (2, 10483135), (5, 4193254), (10, 2096627), (13, 1612790), (17, 1233310), (26, 806395), (34, 616655), (53, 395590), (65, 322558), (85, 246662), (106, 197795), (130, 161279), (170, 123331), (179, 117130), (221, 94870), (265, 79118), (358, 58565), (442, 47435), (530, 39559), (689, 30430), (895, 23426), (901, 23270), (1105, 18974), (1378, 15215), (1790, 11713), (1802, 11635), (2210, 9487), (2327, 9010), (3043, 6890), (3445, 6086), (4505, 4654)]