39997960

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^3\times {\mathrm{41}}^1$

素因数の和:139

約数の個数: 64

約数和(自身を含む): 95482800

約数和(自身を除く): 55484840

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 41, 58, 82, 116, 145, 164, 205, 232, 290, 328, 410, 580, 820, 841, 1160, 1189, 1640, 1682, 2378, 3364, 4205, 4756, 5945, 6728, 8410, 9512, 11890, 16820, 23780, 24389, 33640, 34481, 47560, 48778, 68962, 97556, 121945, 137924, 172405, 195112, 243890, 275848, 344810, 487780, 689620, 975560, 999949, 1379240, 1999898, 3999796, 4999745, 7999592, 9999490, 19998980, 39997960]

約数ペア:

[(1, 39997960), (2, 19998980), (4, 9999490), (5, 7999592), (8, 4999745), (10, 3999796), (20, 1999898), (29, 1379240), (40, 999949), (41, 975560), (58, 689620), (82, 487780), (116, 344810), (145, 275848), (164, 243890), (205, 195112), (232, 172405), (290, 137924), (328, 121945), (410, 97556), (580, 68962), (820, 48778), (841, 47560), (1160, 34481), (1189, 33640), (1640, 24389), (1682, 23780), (2378, 16820), (3364, 11890), (4205, 9512), (4756, 8410), (5945, 6728)]