289111575

素因数分解:

$3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{571}}^1$

素因数の和:784

約数の個数: 48

約数和(自身を含む): 493091456

約数和(自身を除く): 203979881

約数列:

[1, 3, 5, 15, 25, 43, 75, 129, 157, 215, 471, 571, 645, 785, 1075, 1713, 2355, 2855, 3225, 3925, 6751, 8565, 11775, 14275, 20253, 24553, 33755, 42825, 73659, 89647, 101265, 122765, 168775, 268941, 368295, 448235, 506325, 613825, 1344705, 1841475, 2241175, 3854821, 6723525, 11564463, 19274105, 57822315, 96370525, 289111575]

約数ペア:

[(1, 289111575), (3, 96370525), (5, 57822315), (15, 19274105), (25, 11564463), (43, 6723525), (75, 3854821), (129, 2241175), (157, 1841475), (215, 1344705), (471, 613825), (571, 506325), (645, 448235), (785, 368295), (1075, 268941), (1713, 168775), (2355, 122765), (2855, 101265), (3225, 89647), (3925, 73659), (6751, 42825), (8565, 33755), (11775, 24553), (14275, 20253)]