398918260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{5309}}^1$

素因数の和:5365

約数の個数: 72

約数和(自身を含む): 958539960

約数和(自身を除く): 559621700

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 289, 340, 442, 578, 884, 1105, 1156, 1445, 2210, 2890, 3757, 4420, 5309, 5780, 7514, 10618, 15028, 18785, 21236, 26545, 37570, 53090, 69017, 75140, 90253, 106180, 138034, 180506, 276068, 345085, 361012, 451265, 690170, 902530, 1173289, 1380340, 1534301, 1805060, 2346578, 3068602, 4693156, 5866445, 6137204, 7671505, 11732890, 15343010, 19945913, 23465780, 30686020, 39891826, 79783652, 99729565, 199459130, 398918260]

約数ペア:

[(1, 398918260), (2, 199459130), (4, 99729565), (5, 79783652), (10, 39891826), (13, 30686020), (17, 23465780), (20, 19945913), (26, 15343010), (34, 11732890), (52, 7671505), (65, 6137204), (68, 5866445), (85, 4693156), (130, 3068602), (170, 2346578), (221, 1805060), (260, 1534301), (289, 1380340), (340, 1173289), (442, 902530), (578, 690170), (884, 451265), (1105, 361012), (1156, 345085), (1445, 276068), (2210, 180506), (2890, 138034), (3757, 106180), (4420, 90253), (5309, 75140), (5780, 69017), (7514, 53090), (10618, 37570), (15028, 26545), (18785, 21236)]