2157312760

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{649793}}^1$

素因数の和:649887

約数の個数: 32

約数和(自身を含む): 4912442640

約数和(自身を除く): 2755129880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 649793, 1299586, 2599172, 3248965, 5198344, 6497930, 12995860, 25991720, 53932819, 107865638, 215731276, 269664095, 431462552, 539328190, 1078656380, 2157312760]

約数ペア:

[(1, 2157312760), (2, 1078656380), (4, 539328190), (5, 431462552), (8, 269664095), (10, 215731276), (20, 107865638), (40, 53932819), (83, 25991720), (166, 12995860), (332, 6497930), (415, 5198344), (664, 3248965), (830, 2599172), (1660, 1299586), (3320, 649793)]