39878415

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{557}}^1$

素因数の和:648

約数の個数: 48

約数和(自身を含む): 72772128

約数和(自身を除く): 32893713

約数列:

[1, 3, 5, 9, 15, 37, 43, 45, 111, 129, 185, 215, 333, 387, 555, 557, 645, 1591, 1665, 1671, 1935, 2785, 4773, 5013, 7955, 8355, 14319, 20609, 23865, 23951, 25065, 61827, 71595, 71853, 103045, 119755, 185481, 215559, 309135, 359265, 886187, 927405, 1077795, 2658561, 4430935, 7975683, 13292805, 39878415]

約数ペア:

[(1, 39878415), (3, 13292805), (5, 7975683), (9, 4430935), (15, 2658561), (37, 1077795), (43, 927405), (45, 886187), (111, 359265), (129, 309135), (185, 215559), (215, 185481), (333, 119755), (387, 103045), (555, 71853), (557, 71595), (645, 61827), (1591, 25065), (1665, 23951), (1671, 23865), (1935, 20609), (2785, 14319), (4773, 8355), (5013, 7955)]