400289428

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{401}}^1\times {\mathrm{463}}^1$

素因数の和:893

約数の個数: 72

約数和(自身を含む): 893096064

約数和(自身を除く): 492806636

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 49, 77, 98, 154, 196, 308, 401, 463, 539, 802, 926, 1078, 1604, 1852, 2156, 2807, 3241, 4411, 5093, 5614, 6482, 8822, 10186, 11228, 12964, 17644, 19649, 20372, 22687, 30877, 35651, 39298, 45374, 61754, 71302, 78596, 90748, 123508, 142604, 185663, 216139, 249557, 371326, 432278, 499114, 742652, 864556, 998228, 1299641, 2042293, 2599282, 4084586, 5198564, 8169172, 9097487, 14296051, 18194974, 28592102, 36389948, 57184204, 100072357, 200144714, 400289428]

約数ペア:

[(1, 400289428), (2, 200144714), (4, 100072357), (7, 57184204), (11, 36389948), (14, 28592102), (22, 18194974), (28, 14296051), (44, 9097487), (49, 8169172), (77, 5198564), (98, 4084586), (154, 2599282), (196, 2042293), (308, 1299641), (401, 998228), (463, 864556), (539, 742652), (802, 499114), (926, 432278), (1078, 371326), (1604, 249557), (1852, 216139), (2156, 185663), (2807, 142604), (3241, 123508), (4411, 90748), (5093, 78596), (5614, 71302), (6482, 61754), (8822, 45374), (10186, 39298), (11228, 35651), (12964, 30877), (17644, 22687), (19649, 20372)]