19749920

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1$

素因数の和:222

約数の個数: 96

約数和(自身を含む): 50703408

約数和(自身を除く): 30953488

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 53, 68, 80, 85, 106, 136, 137, 160, 170, 212, 265, 272, 274, 340, 424, 530, 544, 548, 680, 685, 848, 901, 1060, 1096, 1360, 1370, 1696, 1802, 2120, 2192, 2329, 2720, 2740, 3604, 4240, 4384, 4505, 4658, 5480, 7208, 7261, 8480, 9010, 9316, 10960, 11645, 14416, 14522, 18020, 18632, 21920, 23290, 28832, 29044, 36040, 36305, 37264, 46580, 58088, 72080, 72610, 74528, 93160, 116176, 123437, 144160, 145220, 186320, 232352, 246874, 290440, 372640, 493748, 580880, 617185, 987496, 1161760, 1234370, 1974992, 2468740, 3949984, 4937480, 9874960, 19749920]

約数ペア:

[(1, 19749920), (2, 9874960), (4, 4937480), (5, 3949984), (8, 2468740), (10, 1974992), (16, 1234370), (17, 1161760), (20, 987496), (32, 617185), (34, 580880), (40, 493748), (53, 372640), (68, 290440), (80, 246874), (85, 232352), (106, 186320), (136, 145220), (137, 144160), (160, 123437), (170, 116176), (212, 93160), (265, 74528), (272, 72610), (274, 72080), (340, 58088), (424, 46580), (530, 37264), (544, 36305), (548, 36040), (680, 29044), (685, 28832), (848, 23290), (901, 21920), (1060, 18632), (1096, 18020), (1360, 14522), (1370, 14416), (1696, 11645), (1802, 10960), (2120, 9316), (2192, 9010), (2329, 8480), (2720, 7261), (2740, 7208), (3604, 5480), (4240, 4658), (4384, 4505)]