81717520

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{19273}}^1$

素因数の和:19339

約数の個数: 40

約数和(自身を含む): 193588056

約数和(自身を除く): 111870536

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 212, 265, 424, 530, 848, 1060, 2120, 4240, 19273, 38546, 77092, 96365, 154184, 192730, 308368, 385460, 770920, 1021469, 1541840, 2042938, 4085876, 5107345, 8171752, 10214690, 16343504, 20429380, 40858760, 81717520]

約数ペア:

[(1, 81717520), (2, 40858760), (4, 20429380), (5, 16343504), (8, 10214690), (10, 8171752), (16, 5107345), (20, 4085876), (40, 2042938), (53, 1541840), (80, 1021469), (106, 770920), (212, 385460), (265, 308368), (424, 192730), (530, 154184), (848, 96365), (1060, 77092), (2120, 38546), (4240, 19273)]