31393040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{919}}^1$

素因数の和:1000

約数の個数: 80

約数和(自身を含む): 84875520

約数和(自身を除く): 53482480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 61, 70, 80, 112, 122, 140, 244, 280, 305, 427, 488, 560, 610, 854, 919, 976, 1220, 1708, 1838, 2135, 2440, 3416, 3676, 4270, 4595, 4880, 6433, 6832, 7352, 8540, 9190, 12866, 14704, 17080, 18380, 25732, 32165, 34160, 36760, 51464, 56059, 64330, 73520, 102928, 112118, 128660, 224236, 257320, 280295, 392413, 448472, 514640, 560590, 784826, 896944, 1121180, 1569652, 1962065, 2242360, 3139304, 3924130, 4484720, 6278608, 7848260, 15696520, 31393040]

約数ペア:

[(1, 31393040), (2, 15696520), (4, 7848260), (5, 6278608), (7, 4484720), (8, 3924130), (10, 3139304), (14, 2242360), (16, 1962065), (20, 1569652), (28, 1121180), (35, 896944), (40, 784826), (56, 560590), (61, 514640), (70, 448472), (80, 392413), (112, 280295), (122, 257320), (140, 224236), (244, 128660), (280, 112118), (305, 102928), (427, 73520), (488, 64330), (560, 56059), (610, 51464), (854, 36760), (919, 34160), (976, 32165), (1220, 25732), (1708, 18380), (1838, 17080), (2135, 14704), (2440, 12866), (3416, 9190), (3676, 8540), (4270, 7352), (4595, 6832), (4880, 6433)]