80721975

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1531}}^1$

素因数の和:1600

約数の個数: 48

約数和(自身を含む): 144375680

約数和(自身を除く): 63653705

約数列:

[1, 3, 5, 15, 19, 25, 37, 57, 75, 95, 111, 185, 285, 475, 555, 703, 925, 1425, 1531, 2109, 2775, 3515, 4593, 7655, 10545, 17575, 22965, 29089, 38275, 52725, 56647, 87267, 114825, 145445, 169941, 283235, 436335, 727225, 849705, 1076293, 1416175, 2181675, 3228879, 4248525, 5381465, 16144395, 26907325, 80721975]

約数ペア:

[(1, 80721975), (3, 26907325), (5, 16144395), (15, 5381465), (19, 4248525), (25, 3228879), (37, 2181675), (57, 1416175), (75, 1076293), (95, 849705), (111, 727225), (185, 436335), (285, 283235), (475, 169941), (555, 145445), (703, 114825), (925, 87267), (1425, 56647), (1531, 52725), (2109, 38275), (2775, 29089), (3515, 22965), (4593, 17575), (7655, 10545)]