399998456

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{11279}}^1$

素因数の和:11340

約数の個数: 64

約数和(自身を含む): 909619200

約数和(自身を除く): 509620744

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 31, 44, 52, 62, 88, 104, 124, 143, 248, 286, 341, 403, 572, 682, 806, 1144, 1364, 1612, 2728, 3224, 4433, 8866, 11279, 17732, 22558, 35464, 45116, 90232, 124069, 146627, 248138, 293254, 349649, 496276, 586508, 699298, 992552, 1173016, 1398596, 1612897, 2797192, 3225794, 3846139, 4545437, 6451588, 7692278, 9090874, 12903176, 15384556, 18181748, 30769112, 36363496, 49999807, 99999614, 199999228, 399998456]

約数ペア:

[(1, 399998456), (2, 199999228), (4, 99999614), (8, 49999807), (11, 36363496), (13, 30769112), (22, 18181748), (26, 15384556), (31, 12903176), (44, 9090874), (52, 7692278), (62, 6451588), (88, 4545437), (104, 3846139), (124, 3225794), (143, 2797192), (248, 1612897), (286, 1398596), (341, 1173016), (403, 992552), (572, 699298), (682, 586508), (806, 496276), (1144, 349649), (1364, 293254), (1612, 248138), (2728, 146627), (3224, 124069), (4433, 90232), (8866, 45116), (11279, 35464), (17732, 22558)]