21273868

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{239}}^1$

素因数の和:295

約数の個数: 72

約数和(自身を含む): 49512960

約数和(自身を除く): 28239092

約数列:

[1, 2, 4, 7, 11, 14, 17, 22, 28, 34, 44, 68, 77, 119, 154, 187, 238, 239, 289, 308, 374, 476, 478, 578, 748, 956, 1156, 1309, 1673, 2023, 2618, 2629, 3179, 3346, 4046, 4063, 5236, 5258, 6358, 6692, 8092, 8126, 10516, 12716, 16252, 18403, 22253, 28441, 36806, 44506, 44693, 56882, 69071, 73612, 89012, 89386, 113764, 138142, 178772, 276284, 312851, 483497, 625702, 759781, 966994, 1251404, 1519562, 1933988, 3039124, 5318467, 10636934, 21273868]

約数ペア:

[(1, 21273868), (2, 10636934), (4, 5318467), (7, 3039124), (11, 1933988), (14, 1519562), (17, 1251404), (22, 966994), (28, 759781), (34, 625702), (44, 483497), (68, 312851), (77, 276284), (119, 178772), (154, 138142), (187, 113764), (238, 89386), (239, 89012), (289, 73612), (308, 69071), (374, 56882), (476, 44693), (478, 44506), (578, 36806), (748, 28441), (956, 22253), (1156, 18403), (1309, 16252), (1673, 12716), (2023, 10516), (2618, 8126), (2629, 8092), (3179, 6692), (3346, 6358), (4046, 5258), (4063, 5236)]