51681890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{577}}^1$

素因数の和:663

約数の個数: 48

約数和(自身を含む): 102812328

約数和(自身を除く): 51130438

約数列:

[1, 2, 5, 10, 13, 26, 53, 65, 106, 130, 169, 265, 338, 530, 577, 689, 845, 1154, 1378, 1690, 2885, 3445, 5770, 6890, 7501, 8957, 15002, 17914, 30581, 37505, 44785, 61162, 75010, 89570, 97513, 152905, 195026, 305810, 397553, 487565, 795106, 975130, 1987765, 3975530, 5168189, 10336378, 25840945, 51681890]

約数ペア:

[(1, 51681890), (2, 25840945), (5, 10336378), (10, 5168189), (13, 3975530), (26, 1987765), (53, 975130), (65, 795106), (106, 487565), (130, 397553), (169, 305810), (265, 195026), (338, 152905), (530, 97513), (577, 89570), (689, 75010), (845, 61162), (1154, 44785), (1378, 37505), (1690, 30581), (2885, 17914), (3445, 15002), (5770, 8957), (6890, 7501)]