278804080

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{389}}^1$

素因数の和:467

約数の個数: 120

約数和(自身を含む): 712632960

約数和(自身を除く): 433828880

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 31, 34, 40, 62, 68, 80, 85, 124, 136, 155, 170, 248, 272, 289, 310, 340, 389, 496, 527, 578, 620, 680, 778, 1054, 1156, 1240, 1360, 1445, 1556, 1945, 2108, 2312, 2480, 2635, 2890, 3112, 3890, 4216, 4624, 5270, 5780, 6224, 6613, 7780, 8432, 8959, 10540, 11560, 12059, 13226, 15560, 17918, 21080, 23120, 24118, 26452, 31120, 33065, 35836, 42160, 44795, 48236, 52904, 60295, 66130, 71672, 89590, 96472, 105808, 112421, 120590, 132260, 143344, 179180, 192944, 205003, 224842, 241180, 264520, 358360, 410006, 449684, 482360, 529040, 562105, 716720, 820012, 899368, 964720, 1025015, 1124210, 1640024, 1798736, 2050030, 2248420, 3280048, 3485051, 4100060, 4496840, 6970102, 8200120, 8993680, 13940204, 16400240, 17425255, 27880408, 34850510, 55760816, 69701020, 139402040, 278804080]

約数ペア:

[(1, 278804080), (2, 139402040), (4, 69701020), (5, 55760816), (8, 34850510), (10, 27880408), (16, 17425255), (17, 16400240), (20, 13940204), (31, 8993680), (34, 8200120), (40, 6970102), (62, 4496840), (68, 4100060), (80, 3485051), (85, 3280048), (124, 2248420), (136, 2050030), (155, 1798736), (170, 1640024), (248, 1124210), (272, 1025015), (289, 964720), (310, 899368), (340, 820012), (389, 716720), (496, 562105), (527, 529040), (578, 482360), (620, 449684), (680, 410006), (778, 358360), (1054, 264520), (1156, 241180), (1240, 224842), (1360, 205003), (1445, 192944), (1556, 179180), (1945, 143344), (2108, 132260), (2312, 120590), (2480, 112421), (2635, 105808), (2890, 96472), (3112, 89590), (3890, 71672), (4216, 66130), (4624, 60295), (5270, 52904), (5780, 48236), (6224, 44795), (6613, 42160), (7780, 35836), (8432, 33065), (8959, 31120), (10540, 26452), (11560, 24118), (12059, 23120), (13226, 21080), (15560, 17918)]