27905840

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^3\times {\mathrm{71}}^1$

素因数の和:135

約数の個数: 80

約数和(自身を含む): 69906240

約数和(自身を除く): 42000400

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 71, 80, 85, 136, 142, 170, 272, 284, 289, 340, 355, 568, 578, 680, 710, 1136, 1156, 1207, 1360, 1420, 1445, 2312, 2414, 2840, 2890, 4624, 4828, 4913, 5680, 5780, 6035, 9656, 9826, 11560, 12070, 19312, 19652, 20519, 23120, 24140, 24565, 39304, 41038, 48280, 49130, 78608, 82076, 96560, 98260, 102595, 164152, 196520, 205190, 328304, 348823, 393040, 410380, 697646, 820760, 1395292, 1641520, 1744115, 2790584, 3488230, 5581168, 6976460, 13952920, 27905840]

約数ペア:

[(1, 27905840), (2, 13952920), (4, 6976460), (5, 5581168), (8, 3488230), (10, 2790584), (16, 1744115), (17, 1641520), (20, 1395292), (34, 820760), (40, 697646), (68, 410380), (71, 393040), (80, 348823), (85, 328304), (136, 205190), (142, 196520), (170, 164152), (272, 102595), (284, 98260), (289, 96560), (340, 82076), (355, 78608), (568, 49130), (578, 48280), (680, 41038), (710, 39304), (1136, 24565), (1156, 24140), (1207, 23120), (1360, 20519), (1420, 19652), (1445, 19312), (2312, 12070), (2414, 11560), (2840, 9826), (2890, 9656), (4624, 6035), (4828, 5780), (4913, 5680)]