28886800

素因数分解:

$2^4\times 5^2\times {\mathrm{257}}^1\times {\mathrm{281}}^1$

素因数の和:556

約数の個数: 60

約数和(自身を含む): 69918516

約数和(自身を除く): 41031716

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 257, 281, 400, 514, 562, 1028, 1124, 1285, 1405, 2056, 2248, 2570, 2810, 4112, 4496, 5140, 5620, 6425, 7025, 10280, 11240, 12850, 14050, 20560, 22480, 25700, 28100, 51400, 56200, 72217, 102800, 112400, 144434, 288868, 361085, 577736, 722170, 1155472, 1444340, 1805425, 2888680, 3610850, 5777360, 7221700, 14443400, 28886800]

約数ペア:

[(1, 28886800), (2, 14443400), (4, 7221700), (5, 5777360), (8, 3610850), (10, 2888680), (16, 1805425), (20, 1444340), (25, 1155472), (40, 722170), (50, 577736), (80, 361085), (100, 288868), (200, 144434), (257, 112400), (281, 102800), (400, 72217), (514, 56200), (562, 51400), (1028, 28100), (1124, 25700), (1285, 22480), (1405, 20560), (2056, 14050), (2248, 12850), (2570, 11240), (2810, 10280), (4112, 7025), (4496, 6425), (5140, 5620)]