21553320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{4177}}^1$

素因数の和:4234

約数の個数: 64

約数和(自身を含む): 66179520

約数和(自身を除く): 44626200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 43, 60, 86, 120, 129, 172, 215, 258, 344, 430, 516, 645, 860, 1032, 1290, 1720, 2580, 4177, 5160, 8354, 12531, 16708, 20885, 25062, 33416, 41770, 50124, 62655, 83540, 100248, 125310, 167080, 179611, 250620, 359222, 501240, 538833, 718444, 898055, 1077666, 1436888, 1796110, 2155332, 2694165, 3592220, 4310664, 5388330, 7184440, 10776660, 21553320]

約数ペア:

[(1, 21553320), (2, 10776660), (3, 7184440), (4, 5388330), (5, 4310664), (6, 3592220), (8, 2694165), (10, 2155332), (12, 1796110), (15, 1436888), (20, 1077666), (24, 898055), (30, 718444), (40, 538833), (43, 501240), (60, 359222), (86, 250620), (120, 179611), (129, 167080), (172, 125310), (215, 100248), (258, 83540), (344, 62655), (430, 50124), (516, 41770), (645, 33416), (860, 25062), (1032, 20885), (1290, 16708), (1720, 12531), (2580, 8354), (4177, 5160)]