20968220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{281}}^1$

素因数の和:351

約数の個数: 96

約数和(自身を含む): 55714176

約数和(自身を除く): 34745956

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 41, 52, 65, 70, 82, 91, 130, 140, 164, 182, 205, 260, 281, 287, 364, 410, 455, 533, 562, 574, 820, 910, 1066, 1124, 1148, 1405, 1435, 1820, 1967, 2132, 2665, 2810, 2870, 3653, 3731, 3934, 5330, 5620, 5740, 7306, 7462, 7868, 9835, 10660, 11521, 14612, 14924, 18265, 18655, 19670, 23042, 25571, 36530, 37310, 39340, 46084, 51142, 57605, 73060, 74620, 80647, 102284, 115210, 127855, 149773, 161294, 230420, 255710, 299546, 322588, 403235, 511420, 599092, 748865, 806470, 1048411, 1497730, 1612940, 2096822, 2995460, 4193644, 5242055, 10484110, 20968220]

約数ペア:

[(1, 20968220), (2, 10484110), (4, 5242055), (5, 4193644), (7, 2995460), (10, 2096822), (13, 1612940), (14, 1497730), (20, 1048411), (26, 806470), (28, 748865), (35, 599092), (41, 511420), (52, 403235), (65, 322588), (70, 299546), (82, 255710), (91, 230420), (130, 161294), (140, 149773), (164, 127855), (182, 115210), (205, 102284), (260, 80647), (281, 74620), (287, 73060), (364, 57605), (410, 51142), (455, 46084), (533, 39340), (562, 37310), (574, 36530), (820, 25571), (910, 23042), (1066, 19670), (1124, 18655), (1148, 18265), (1405, 14924), (1435, 14612), (1820, 11521), (1967, 10660), (2132, 9835), (2665, 7868), (2810, 7462), (2870, 7306), (3653, 5740), (3731, 5620), (3934, 5330)]