20905408

素因数分解:

$2^6\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{257}}^1$

素因数の和:341

約数の個数: 56

約数和(自身を含む): 44037504

約数和(自身を除く): 23132096

約数列:

[1, 2, 4, 8, 16, 31, 32, 41, 62, 64, 82, 124, 164, 248, 257, 328, 496, 514, 656, 992, 1028, 1271, 1312, 1984, 2056, 2542, 2624, 4112, 5084, 7967, 8224, 10168, 10537, 15934, 16448, 20336, 21074, 31868, 40672, 42148, 63736, 81344, 84296, 127472, 168592, 254944, 326647, 337184, 509888, 653294, 674368, 1306588, 2613176, 5226352, 10452704, 20905408]

約数ペア:

[(1, 20905408), (2, 10452704), (4, 5226352), (8, 2613176), (16, 1306588), (31, 674368), (32, 653294), (41, 509888), (62, 337184), (64, 326647), (82, 254944), (124, 168592), (164, 127472), (248, 84296), (257, 81344), (328, 63736), (496, 42148), (514, 40672), (656, 31868), (992, 21074), (1028, 20336), (1271, 16448), (1312, 15934), (1984, 10537), (2056, 10168), (2542, 8224), (2624, 7967), (4112, 5084)]