171805720

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{349}}^1\times {\mathrm{397}}^1$

素因数の和:788

約数の個数: 64

約数和(自身を含む): 401184000

約数和(自身を除く): 229378280

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 349, 397, 620, 698, 794, 1240, 1396, 1588, 1745, 1985, 2792, 3176, 3490, 3970, 6980, 7940, 10819, 12307, 13960, 15880, 21638, 24614, 43276, 49228, 54095, 61535, 86552, 98456, 108190, 123070, 138553, 216380, 246140, 277106, 432760, 492280, 554212, 692765, 1108424, 1385530, 2771060, 4295143, 5542120, 8590286, 17180572, 21475715, 34361144, 42951430, 85902860, 171805720]

約数ペア:

[(1, 171805720), (2, 85902860), (4, 42951430), (5, 34361144), (8, 21475715), (10, 17180572), (20, 8590286), (31, 5542120), (40, 4295143), (62, 2771060), (124, 1385530), (155, 1108424), (248, 692765), (310, 554212), (349, 492280), (397, 432760), (620, 277106), (698, 246140), (794, 216380), (1240, 138553), (1396, 123070), (1588, 108190), (1745, 98456), (1985, 86552), (2792, 61535), (3176, 54095), (3490, 49228), (3970, 43276), (6980, 24614), (7940, 21638), (10819, 15880), (12307, 13960)]