12973960

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{397}}^1$

素因数の和:470

約数の個数: 64

約数和(自身を含む): 31521600

約数和(自身を除く): 18547640

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 43, 76, 86, 95, 152, 172, 190, 215, 344, 380, 397, 430, 760, 794, 817, 860, 1588, 1634, 1720, 1985, 3176, 3268, 3970, 4085, 6536, 7543, 7940, 8170, 15086, 15880, 16340, 17071, 30172, 32680, 34142, 37715, 60344, 68284, 75430, 85355, 136568, 150860, 170710, 301720, 324349, 341420, 648698, 682840, 1297396, 1621745, 2594792, 3243490, 6486980, 12973960]

約数ペア:

[(1, 12973960), (2, 6486980), (4, 3243490), (5, 2594792), (8, 1621745), (10, 1297396), (19, 682840), (20, 648698), (38, 341420), (40, 324349), (43, 301720), (76, 170710), (86, 150860), (95, 136568), (152, 85355), (172, 75430), (190, 68284), (215, 60344), (344, 37715), (380, 34142), (397, 32680), (430, 30172), (760, 17071), (794, 16340), (817, 15880), (860, 15086), (1588, 8170), (1634, 7940), (1720, 7543), (1985, 6536), (3176, 4085), (3268, 3970)]