249245840

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{1399}}^1$

素因数の和:1560

約数の個数: 80

約数和(自身を含む): 618710400

約数和(自身を除く): 369464560

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 131, 136, 170, 262, 272, 340, 524, 655, 680, 1048, 1310, 1360, 1399, 2096, 2227, 2620, 2798, 4454, 5240, 5596, 6995, 8908, 10480, 11135, 11192, 13990, 17816, 22270, 22384, 23783, 27980, 35632, 44540, 47566, 55960, 89080, 95132, 111920, 118915, 178160, 183269, 190264, 237830, 366538, 380528, 475660, 733076, 916345, 951320, 1466152, 1832690, 1902640, 2932304, 3115573, 3665380, 6231146, 7330760, 12462292, 14661520, 15577865, 24924584, 31155730, 49849168, 62311460, 124622920, 249245840]

約数ペア:

[(1, 249245840), (2, 124622920), (4, 62311460), (5, 49849168), (8, 31155730), (10, 24924584), (16, 15577865), (17, 14661520), (20, 12462292), (34, 7330760), (40, 6231146), (68, 3665380), (80, 3115573), (85, 2932304), (131, 1902640), (136, 1832690), (170, 1466152), (262, 951320), (272, 916345), (340, 733076), (524, 475660), (655, 380528), (680, 366538), (1048, 237830), (1310, 190264), (1360, 183269), (1399, 178160), (2096, 118915), (2227, 111920), (2620, 95132), (2798, 89080), (4454, 55960), (5240, 47566), (5596, 44540), (6995, 35632), (8908, 27980), (10480, 23783), (11135, 22384), (11192, 22270), (13990, 17816)]