19720116

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1453}}^1$

素因数の和:1505

約数の個数: 72

約数和(自身を含む): 55571880

約数和(自身を除く): 35851764

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 29, 36, 39, 52, 58, 78, 87, 116, 117, 156, 174, 234, 261, 348, 377, 468, 522, 754, 1044, 1131, 1453, 1508, 2262, 2906, 3393, 4359, 4524, 5812, 6786, 8718, 13077, 13572, 17436, 18889, 26154, 37778, 42137, 52308, 56667, 75556, 84274, 113334, 126411, 168548, 170001, 226668, 252822, 340002, 379233, 505644, 547781, 680004, 758466, 1095562, 1516932, 1643343, 2191124, 3286686, 4930029, 6573372, 9860058, 19720116]

約数ペア:

[(1, 19720116), (2, 9860058), (3, 6573372), (4, 4930029), (6, 3286686), (9, 2191124), (12, 1643343), (13, 1516932), (18, 1095562), (26, 758466), (29, 680004), (36, 547781), (39, 505644), (52, 379233), (58, 340002), (78, 252822), (87, 226668), (116, 170001), (117, 168548), (156, 126411), (174, 113334), (234, 84274), (261, 75556), (348, 56667), (377, 52308), (468, 42137), (522, 37778), (754, 26154), (1044, 18889), (1131, 17436), (1453, 13572), (1508, 13077), (2262, 8718), (2906, 6786), (3393, 5812), (4359, 4524)]