208121420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{7481}}^1$

素因数の和:7610

約数の個数: 48

約数和(自身を含む): 475136928

約数和(自身を除く): 267015508

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 107, 130, 214, 260, 428, 535, 1070, 1391, 2140, 2782, 5564, 6955, 7481, 13910, 14962, 27820, 29924, 37405, 74810, 97253, 149620, 194506, 389012, 486265, 800467, 972530, 1600934, 1945060, 3201868, 4002335, 8004670, 10406071, 16009340, 20812142, 41624284, 52030355, 104060710, 208121420]

約数ペア:

[(1, 208121420), (2, 104060710), (4, 52030355), (5, 41624284), (10, 20812142), (13, 16009340), (20, 10406071), (26, 8004670), (52, 4002335), (65, 3201868), (107, 1945060), (130, 1600934), (214, 972530), (260, 800467), (428, 486265), (535, 389012), (1070, 194506), (1391, 149620), (2140, 97253), (2782, 74810), (5564, 37405), (6955, 29924), (7481, 27820), (13910, 14962)]