128795550

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{257}}^2$

素因数の和:542

約数の個数: 72

約数和(自身を含む): 345326856

約数和(自身を除く): 216531306

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 25, 26, 30, 39, 50, 65, 75, 78, 130, 150, 195, 257, 325, 390, 514, 650, 771, 975, 1285, 1542, 1950, 2570, 3341, 3855, 6425, 6682, 7710, 10023, 12850, 16705, 19275, 20046, 33410, 38550, 50115, 66049, 83525, 100230, 132098, 167050, 198147, 250575, 330245, 396294, 501150, 660490, 858637, 990735, 1651225, 1717274, 1981470, 2575911, 3302450, 4293185, 4953675, 5151822, 8586370, 9907350, 12879555, 21465925, 25759110, 42931850, 64397775, 128795550]

約数ペア:

[(1, 128795550), (2, 64397775), (3, 42931850), (5, 25759110), (6, 21465925), (10, 12879555), (13, 9907350), (15, 8586370), (25, 5151822), (26, 4953675), (30, 4293185), (39, 3302450), (50, 2575911), (65, 1981470), (75, 1717274), (78, 1651225), (130, 990735), (150, 858637), (195, 660490), (257, 501150), (325, 396294), (390, 330245), (514, 250575), (650, 198147), (771, 167050), (975, 132098), (1285, 100230), (1542, 83525), (1950, 66049), (2570, 50115), (3341, 38550), (3855, 33410), (6425, 20046), (6682, 19275), (7710, 16705), (10023, 12850)]