19978728

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{569}}^1$

素因数の和:615

約数の個数: 128

約数和(自身を含む): 65664000

約数和(自身を除く): 45685272

約数列:

[1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 19, 21, 22, 24, 28, 33, 38, 42, 44, 56, 57, 66, 76, 77, 84, 88, 114, 132, 133, 152, 154, 168, 209, 228, 231, 264, 266, 308, 399, 418, 456, 462, 532, 569, 616, 627, 798, 836, 924, 1064, 1138, 1254, 1463, 1596, 1672, 1707, 1848, 2276, 2508, 2926, 3192, 3414, 3983, 4389, 4552, 5016, 5852, 6259, 6828, 7966, 8778, 10811, 11704, 11949, 12518, 13656, 15932, 17556, 18777, 21622, 23898, 25036, 31864, 32433, 35112, 37554, 43244, 43813, 47796, 50072, 64866, 75108, 75677, 86488, 87626, 95592, 118921, 129732, 131439, 150216, 151354, 175252, 227031, 237842, 259464, 262878, 302708, 350504, 356763, 454062, 475684, 525756, 605416, 713526, 832447, 908124, 951368, 1051512, 1427052, 1664894, 1816248, 2497341, 2854104, 3329788, 4994682, 6659576, 9989364, 19978728]

約数ペア:

[(1, 19978728), (2, 9989364), (3, 6659576), (4, 4994682), (6, 3329788), (7, 2854104), (8, 2497341), (11, 1816248), (12, 1664894), (14, 1427052), (19, 1051512), (21, 951368), (22, 908124), (24, 832447), (28, 713526), (33, 605416), (38, 525756), (42, 475684), (44, 454062), (56, 356763), (57, 350504), (66, 302708), (76, 262878), (77, 259464), (84, 237842), (88, 227031), (114, 175252), (132, 151354), (133, 150216), (152, 131439), (154, 129732), (168, 118921), (209, 95592), (228, 87626), (231, 86488), (264, 75677), (266, 75108), (308, 64866), (399, 50072), (418, 47796), (456, 43813), (462, 43244), (532, 37554), (569, 35112), (616, 32433), (627, 31864), (798, 25036), (836, 23898), (924, 21622), (1064, 18777), (1138, 17556), (1254, 15932), (1463, 13656), (1596, 12518), (1672, 11949), (1707, 11704), (1848, 10811), (2276, 8778), (2508, 7966), (2926, 6828), (3192, 6259), (3414, 5852), (3983, 5016), (4389, 4552)]