202489640

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1\times {\mathrm{461}}^1$

素因数の和:690

約数の個数: 64

約数和(自身を含む): 465696000

約数和(自身を除く): 263206360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 139, 158, 278, 316, 395, 461, 556, 632, 695, 790, 922, 1112, 1390, 1580, 1844, 2305, 2780, 3160, 3688, 4610, 5560, 9220, 10981, 18440, 21962, 36419, 43924, 54905, 64079, 72838, 87848, 109810, 128158, 145676, 182095, 219620, 256316, 291352, 320395, 364190, 439240, 512632, 640790, 728380, 1281580, 1456760, 2563160, 5062241, 10124482, 20248964, 25311205, 40497928, 50622410, 101244820, 202489640]

約数ペア:

[(1, 202489640), (2, 101244820), (4, 50622410), (5, 40497928), (8, 25311205), (10, 20248964), (20, 10124482), (40, 5062241), (79, 2563160), (139, 1456760), (158, 1281580), (278, 728380), (316, 640790), (395, 512632), (461, 439240), (556, 364190), (632, 320395), (695, 291352), (790, 256316), (922, 219620), (1112, 182095), (1390, 145676), (1580, 128158), (1844, 109810), (2305, 87848), (2780, 72838), (3160, 64079), (3688, 54905), (4610, 43924), (5560, 36419), (9220, 21962), (10981, 18440)]