71389980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{613}}^1\times {\mathrm{647}}^1$

素因数の和:1275

約数の個数: 72

約数和(自身を含む): 217238112

約数和(自身を除く): 145848132

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 613, 647, 1226, 1294, 1839, 1941, 2452, 2588, 3065, 3235, 3678, 3882, 5517, 5823, 6130, 6470, 7356, 7764, 9195, 9705, 11034, 11646, 12260, 12940, 18390, 19410, 22068, 23292, 27585, 29115, 36780, 38820, 55170, 58230, 110340, 116460, 396611, 793222, 1189833, 1586444, 1983055, 2379666, 3569499, 3966110, 4759332, 5949165, 7138998, 7932220, 11898330, 14277996, 17847495, 23796660, 35694990, 71389980]

約数ペア:

[(1, 71389980), (2, 35694990), (3, 23796660), (4, 17847495), (5, 14277996), (6, 11898330), (9, 7932220), (10, 7138998), (12, 5949165), (15, 4759332), (18, 3966110), (20, 3569499), (30, 2379666), (36, 1983055), (45, 1586444), (60, 1189833), (90, 793222), (180, 396611), (613, 116460), (647, 110340), (1226, 58230), (1294, 55170), (1839, 38820), (1941, 36780), (2452, 29115), (2588, 27585), (3065, 23292), (3235, 22068), (3678, 19410), (3882, 18390), (5517, 12940), (5823, 12260), (6130, 11646), (6470, 11034), (7356, 9705), (7764, 9195)]