278711240

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{491}}^1\times {\mathrm{617}}^1$

素因数の和:1142

約数の個数: 64

約数和(自身を含む): 656760960

約数和(自身を除く): 378049720

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 491, 617, 920, 982, 1234, 1964, 2455, 2468, 3085, 3928, 4910, 4936, 6170, 9820, 11293, 12340, 14191, 19640, 22586, 24680, 28382, 45172, 56465, 56764, 70955, 90344, 112930, 113528, 141910, 225860, 283820, 302947, 451720, 567640, 605894, 1211788, 1514735, 2423576, 3029470, 6058940, 6967781, 12117880, 13935562, 27871124, 34838905, 55742248, 69677810, 139355620, 278711240]

約数ペア:

[(1, 278711240), (2, 139355620), (4, 69677810), (5, 55742248), (8, 34838905), (10, 27871124), (20, 13935562), (23, 12117880), (40, 6967781), (46, 6058940), (92, 3029470), (115, 2423576), (184, 1514735), (230, 1211788), (460, 605894), (491, 567640), (617, 451720), (920, 302947), (982, 283820), (1234, 225860), (1964, 141910), (2455, 113528), (2468, 112930), (3085, 90344), (3928, 70955), (4910, 56764), (4936, 56465), (6170, 45172), (9820, 28382), (11293, 24680), (12340, 22586), (14191, 19640)]