199407375

素因数分解:

$3^2\times 5^3\times {\mathrm{19}}^2\times {\mathrm{491}}^1$

素因数の和:550

約数の個数: 72

約数和(自身を含む): 380152656

約数和(自身を除く): 180745281

約数列:

[1, 3, 5, 9, 15, 19, 25, 45, 57, 75, 95, 125, 171, 225, 285, 361, 375, 475, 491, 855, 1083, 1125, 1425, 1473, 1805, 2375, 2455, 3249, 4275, 4419, 5415, 7125, 7365, 9025, 9329, 12275, 16245, 21375, 22095, 27075, 27987, 36825, 45125, 46645, 61375, 81225, 83961, 110475, 135375, 139935, 177251, 184125, 233225, 406125, 419805, 531753, 552375, 699675, 886255, 1166125, 1595259, 2099025, 2658765, 3498375, 4431275, 7976295, 10495125, 13293825, 22156375, 39881475, 66469125, 199407375]

約数ペア:

[(1, 199407375), (3, 66469125), (5, 39881475), (9, 22156375), (15, 13293825), (19, 10495125), (25, 7976295), (45, 4431275), (57, 3498375), (75, 2658765), (95, 2099025), (125, 1595259), (171, 1166125), (225, 886255), (285, 699675), (361, 552375), (375, 531753), (475, 419805), (491, 406125), (855, 233225), (1083, 184125), (1125, 177251), (1425, 139935), (1473, 135375), (1805, 110475), (2375, 83961), (2455, 81225), (3249, 61375), (4275, 46645), (4419, 45125), (5415, 36825), (7125, 27987), (7365, 27075), (9025, 22095), (9329, 21375), (12275, 16245)]