80681900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1171}}^1$

素因数の和:1251

約数の個数: 72

約数和(自身を含む): 192268944

約数和(自身を除く): 111587044

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 53, 65, 100, 106, 130, 212, 260, 265, 325, 530, 650, 689, 1060, 1171, 1300, 1325, 1378, 2342, 2650, 2756, 3445, 4684, 5300, 5855, 6890, 11710, 13780, 15223, 17225, 23420, 29275, 30446, 34450, 58550, 60892, 62063, 68900, 76115, 117100, 124126, 152230, 248252, 304460, 310315, 380575, 620630, 761150, 806819, 1241260, 1522300, 1551575, 1613638, 3103150, 3227276, 4034095, 6206300, 8068190, 16136380, 20170475, 40340950, 80681900]

約数ペア:

[(1, 80681900), (2, 40340950), (4, 20170475), (5, 16136380), (10, 8068190), (13, 6206300), (20, 4034095), (25, 3227276), (26, 3103150), (50, 1613638), (52, 1551575), (53, 1522300), (65, 1241260), (100, 806819), (106, 761150), (130, 620630), (212, 380575), (260, 310315), (265, 304460), (325, 248252), (530, 152230), (650, 124126), (689, 117100), (1060, 76115), (1171, 68900), (1300, 62063), (1325, 60892), (1378, 58550), (2342, 34450), (2650, 30446), (2756, 29275), (3445, 23420), (4684, 17225), (5300, 15223), (5855, 13780), (6890, 11710)]