15939404

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1$

素因数の和:139

約数の個数: 72

約数和(自身を含む): 34125840

約数和(自身を除く): 18186436

約数列:

[1, 2, 4, 13, 17, 19, 26, 34, 38, 52, 68, 73, 76, 146, 169, 221, 247, 292, 323, 338, 442, 494, 646, 676, 884, 949, 988, 1241, 1292, 1387, 1898, 2482, 2774, 2873, 3211, 3796, 4199, 4964, 5548, 5746, 6422, 8398, 11492, 12337, 12844, 16133, 16796, 18031, 23579, 24674, 32266, 36062, 47158, 49348, 54587, 64532, 72124, 94316, 109174, 209729, 218348, 234403, 306527, 419458, 468806, 613054, 838916, 937612, 1226108, 3984851, 7969702, 15939404]

約数ペア:

[(1, 15939404), (2, 7969702), (4, 3984851), (13, 1226108), (17, 937612), (19, 838916), (26, 613054), (34, 468806), (38, 419458), (52, 306527), (68, 234403), (73, 218348), (76, 209729), (146, 109174), (169, 94316), (221, 72124), (247, 64532), (292, 54587), (323, 49348), (338, 47158), (442, 36062), (494, 32266), (646, 24674), (676, 23579), (884, 18031), (949, 16796), (988, 16133), (1241, 12844), (1292, 12337), (1387, 11492), (1898, 8398), (2482, 6422), (2774, 5746), (2873, 5548), (3211, 4964), (3796, 4199)]