20003968

素因数分解:

$2^7\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{317}}^1$

素因数の和:377

約数の個数: 64

約数和(自身を含む): 43788600

約数和(自身を除く): 23784632

約数列:

[1, 2, 4, 8, 16, 17, 29, 32, 34, 58, 64, 68, 116, 128, 136, 232, 272, 317, 464, 493, 544, 634, 928, 986, 1088, 1268, 1856, 1972, 2176, 2536, 3712, 3944, 5072, 5389, 7888, 9193, 10144, 10778, 15776, 18386, 20288, 21556, 31552, 36772, 40576, 43112, 63104, 73544, 86224, 147088, 156281, 172448, 294176, 312562, 344896, 588352, 625124, 689792, 1176704, 1250248, 2500496, 5000992, 10001984, 20003968]

約数ペア:

[(1, 20003968), (2, 10001984), (4, 5000992), (8, 2500496), (16, 1250248), (17, 1176704), (29, 689792), (32, 625124), (34, 588352), (58, 344896), (64, 312562), (68, 294176), (116, 172448), (128, 156281), (136, 147088), (232, 86224), (272, 73544), (317, 63104), (464, 43112), (493, 40576), (544, 36772), (634, 31552), (928, 21556), (986, 20288), (1088, 18386), (1268, 15776), (1856, 10778), (1972, 10144), (2176, 9193), (2536, 7888), (3712, 5389), (3944, 5072)]