20225595

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1$

素因数の和:196

約数の個数: 64

約数和(自身を含む): 37739520

約数和(自身を除く): 17513925

約数列:

[1, 3, 5, 13, 15, 19, 39, 53, 57, 65, 95, 103, 159, 195, 247, 265, 285, 309, 515, 689, 741, 795, 1007, 1235, 1339, 1545, 1957, 2067, 3021, 3445, 3705, 4017, 5035, 5459, 5871, 6695, 9785, 10335, 13091, 15105, 16377, 20085, 25441, 27295, 29355, 39273, 65455, 70967, 76323, 81885, 103721, 127205, 196365, 212901, 311163, 354835, 381615, 518605, 1064505, 1348373, 1555815, 4045119, 6741865, 20225595]

約数ペア:

[(1, 20225595), (3, 6741865), (5, 4045119), (13, 1555815), (15, 1348373), (19, 1064505), (39, 518605), (53, 381615), (57, 354835), (65, 311163), (95, 212901), (103, 196365), (159, 127205), (195, 103721), (247, 81885), (265, 76323), (285, 70967), (309, 65455), (515, 39273), (689, 29355), (741, 27295), (795, 25441), (1007, 20085), (1235, 16377), (1339, 15105), (1545, 13091), (1957, 10335), (2067, 9785), (3021, 6695), (3445, 5871), (3705, 5459), (4017, 5035)]