408889720

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{283}}^1\times {\mathrm{881}}^1$

素因数の和:1216

約数の個数: 64

約数和(自身を含む): 946844640

約数和(自身を除く): 537954920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 283, 328, 410, 566, 820, 881, 1132, 1415, 1640, 1762, 2264, 2830, 3524, 4405, 5660, 7048, 8810, 11320, 11603, 17620, 23206, 35240, 36121, 46412, 58015, 72242, 92824, 116030, 144484, 180605, 232060, 249323, 288968, 361210, 464120, 498646, 722420, 997292, 1246615, 1444840, 1994584, 2493230, 4986460, 9972920, 10222243, 20444486, 40888972, 51111215, 81777944, 102222430, 204444860, 408889720]

約数ペア:

[(1, 408889720), (2, 204444860), (4, 102222430), (5, 81777944), (8, 51111215), (10, 40888972), (20, 20444486), (40, 10222243), (41, 9972920), (82, 4986460), (164, 2493230), (205, 1994584), (283, 1444840), (328, 1246615), (410, 997292), (566, 722420), (820, 498646), (881, 464120), (1132, 361210), (1415, 288968), (1640, 249323), (1762, 232060), (2264, 180605), (2830, 144484), (3524, 116030), (4405, 92824), (5660, 72242), (7048, 58015), (8810, 46412), (11320, 36121), (11603, 35240), (17620, 23206)]