20007780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{227}}^1$

素因数の和:365

約数の個数: 96

約数和(自身を含む): 61133184

約数和(自身を除く): 41125404

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 113, 130, 156, 195, 226, 227, 260, 339, 390, 452, 454, 565, 678, 681, 780, 908, 1130, 1135, 1356, 1362, 1469, 1695, 2260, 2270, 2724, 2938, 2951, 3390, 3405, 4407, 4540, 5876, 5902, 6780, 6810, 7345, 8814, 8853, 11804, 13620, 14690, 14755, 17628, 17706, 22035, 25651, 29380, 29510, 35412, 44070, 44265, 51302, 59020, 76953, 88140, 88530, 102604, 128255, 153906, 177060, 256510, 307812, 333463, 384765, 513020, 666926, 769530, 1000389, 1333852, 1539060, 1667315, 2000778, 3334630, 4001556, 5001945, 6669260, 10003890, 20007780]

約数ペア:

[(1, 20007780), (2, 10003890), (3, 6669260), (4, 5001945), (5, 4001556), (6, 3334630), (10, 2000778), (12, 1667315), (13, 1539060), (15, 1333852), (20, 1000389), (26, 769530), (30, 666926), (39, 513020), (52, 384765), (60, 333463), (65, 307812), (78, 256510), (113, 177060), (130, 153906), (156, 128255), (195, 102604), (226, 88530), (227, 88140), (260, 76953), (339, 59020), (390, 51302), (452, 44265), (454, 44070), (565, 35412), (678, 29510), (681, 29380), (780, 25651), (908, 22035), (1130, 17706), (1135, 17628), (1356, 14755), (1362, 14690), (1469, 13620), (1695, 11804), (2260, 8853), (2270, 8814), (2724, 7345), (2938, 6810), (2951, 6780), (3390, 5902), (3405, 5876), (4407, 4540)]