221393480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71881}}^1$

素因数の和:71910

約数の個数: 64

約数和(自身を含む): 621060480

約数和(自身を除く): 399667000

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 71881, 143762, 287524, 359405, 503167, 575048, 718810, 790691, 1006334, 1437620, 1581382, 2012668, 2515835, 2875240, 3162764, 3953455, 4025336, 5031670, 5534837, 6325528, 7906910, 10063340, 11069674, 15813820, 20126680, 22139348, 27674185, 31627640, 44278696, 55348370, 110696740, 221393480]

約数ペア:

[(1, 221393480), (2, 110696740), (4, 55348370), (5, 44278696), (7, 31627640), (8, 27674185), (10, 22139348), (11, 20126680), (14, 15813820), (20, 11069674), (22, 10063340), (28, 7906910), (35, 6325528), (40, 5534837), (44, 5031670), (55, 4025336), (56, 3953455), (70, 3162764), (77, 2875240), (88, 2515835), (110, 2012668), (140, 1581382), (154, 1437620), (220, 1006334), (280, 790691), (308, 718810), (385, 575048), (440, 503167), (616, 359405), (770, 287524), (1540, 143762), (3080, 71881)]