20163023020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{491}}^1\times {\mathrm{521}}^1\times {\mathrm{563}}^1$

素因数の和:1591

約数の個数: 96

約数和(自身を含む): 48669175296

約数和(自身を除く): 28506152276

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 491, 521, 563, 982, 1042, 1126, 1964, 2084, 2252, 2455, 2605, 2815, 3437, 3647, 3941, 4910, 5210, 5630, 6874, 7294, 7882, 9820, 10420, 11260, 13748, 14588, 15764, 17185, 18235, 19705, 34370, 36470, 39410, 68740, 72940, 78820, 255811, 276433, 293323, 511622, 552866, 586646, 1023244, 1105732, 1173292, 1279055, 1382165, 1466615, 1790677, 1935031, 2053261, 2558110, 2764330, 2933230, 3581354, 3870062, 4106522, 5116220, 5528660, 5866460, 7162708, 7740124, 8213044, 8953385, 9675155, 10266305, 17906770, 19350310, 20532610, 35813540, 38700620, 41065220, 144021593, 288043186, 576086372, 720107965, 1008151151, 1440215930, 2016302302, 2880431860, 4032604604, 5040755755, 10081511510, 20163023020]

約数ペア:

[(1, 20163023020), (2, 10081511510), (4, 5040755755), (5, 4032604604), (7, 2880431860), (10, 2016302302), (14, 1440215930), (20, 1008151151), (28, 720107965), (35, 576086372), (70, 288043186), (140, 144021593), (491, 41065220), (521, 38700620), (563, 35813540), (982, 20532610), (1042, 19350310), (1126, 17906770), (1964, 10266305), (2084, 9675155), (2252, 8953385), (2455, 8213044), (2605, 7740124), (2815, 7162708), (3437, 5866460), (3647, 5528660), (3941, 5116220), (4910, 4106522), (5210, 3870062), (5630, 3581354), (6874, 2933230), (7294, 2764330), (7882, 2558110), (9820, 2053261), (10420, 1935031), (11260, 1790677), (13748, 1466615), (14588, 1382165), (15764, 1279055), (17185, 1173292), (18235, 1105732), (19705, 1023244), (34370, 586646), (36470, 552866), (39410, 511622), (68740, 293323), (72940, 276433), (78820, 255811)]