19415520

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{139}}^1$

素因数の和:257

約数の個数: 144

約数和(自身を含む): 67420080

約数和(自身を除く): 48004560

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 97, 120, 139, 144, 160, 180, 194, 240, 278, 288, 291, 360, 388, 417, 480, 485, 556, 582, 695, 720, 776, 834, 873, 970, 1112, 1164, 1251, 1390, 1440, 1455, 1552, 1668, 1746, 1940, 2085, 2224, 2328, 2502, 2780, 2910, 3104, 3336, 3492, 3880, 4170, 4365, 4448, 4656, 5004, 5560, 5820, 6255, 6672, 6984, 7760, 8340, 8730, 9312, 10008, 11120, 11640, 12510, 13344, 13483, 13968, 15520, 16680, 17460, 20016, 22240, 23280, 25020, 26966, 27936, 33360, 34920, 40032, 40449, 46560, 50040, 53932, 66720, 67415, 69840, 80898, 100080, 107864, 121347, 134830, 139680, 161796, 200160, 202245, 215728, 242694, 269660, 323592, 404490, 431456, 485388, 539320, 606735, 647184, 808980, 970776, 1078640, 1213470, 1294368, 1617960, 1941552, 2157280, 2426940, 3235920, 3883104, 4853880, 6471840, 9707760, 19415520]

約数ペア:

[(1, 19415520), (2, 9707760), (3, 6471840), (4, 4853880), (5, 3883104), (6, 3235920), (8, 2426940), (9, 2157280), (10, 1941552), (12, 1617960), (15, 1294368), (16, 1213470), (18, 1078640), (20, 970776), (24, 808980), (30, 647184), (32, 606735), (36, 539320), (40, 485388), (45, 431456), (48, 404490), (60, 323592), (72, 269660), (80, 242694), (90, 215728), (96, 202245), (97, 200160), (120, 161796), (139, 139680), (144, 134830), (160, 121347), (180, 107864), (194, 100080), (240, 80898), (278, 69840), (288, 67415), (291, 66720), (360, 53932), (388, 50040), (417, 46560), (480, 40449), (485, 40032), (556, 34920), (582, 33360), (695, 27936), (720, 26966), (776, 25020), (834, 23280), (873, 22240), (970, 20016), (1112, 17460), (1164, 16680), (1251, 15520), (1390, 13968), (1440, 13483), (1455, 13344), (1552, 12510), (1668, 11640), (1746, 11120), (1940, 10008), (2085, 9312), (2224, 8730), (2328, 8340), (2502, 7760), (2780, 6984), (2910, 6672), (3104, 6255), (3336, 5820), (3492, 5560), (3880, 5004), (4170, 4656), (4365, 4448)]