19999044

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{283}}^1$

素因数の和:457

約数の個数: 72

約数和(自身を含む): 54996032

約数和(自身を除く): 34996988

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 151, 156, 234, 283, 302, 453, 468, 566, 604, 849, 906, 1132, 1359, 1698, 1812, 1963, 2547, 2718, 3396, 3679, 3926, 5094, 5436, 5889, 7358, 7852, 10188, 11037, 11778, 14716, 17667, 22074, 23556, 33111, 35334, 42733, 44148, 66222, 70668, 85466, 128199, 132444, 170932, 256398, 384597, 512796, 555529, 769194, 1111058, 1538388, 1666587, 2222116, 3333174, 4999761, 6666348, 9999522, 19999044]

約数ペア:

[(1, 19999044), (2, 9999522), (3, 6666348), (4, 4999761), (6, 3333174), (9, 2222116), (12, 1666587), (13, 1538388), (18, 1111058), (26, 769194), (36, 555529), (39, 512796), (52, 384597), (78, 256398), (117, 170932), (151, 132444), (156, 128199), (234, 85466), (283, 70668), (302, 66222), (453, 44148), (468, 42733), (566, 35334), (604, 33111), (849, 23556), (906, 22074), (1132, 17667), (1359, 14716), (1698, 11778), (1812, 11037), (1963, 10188), (2547, 7852), (2718, 7358), (3396, 5889), (3679, 5436), (3926, 5094)]