2195280440

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1\times {\mathrm{3491}}^1$

素因数の和:3780

約数の個数: 64

約数和(自身を含む): 5028480000

約数和(自身を除く): 2833199560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 199, 316, 395, 398, 632, 790, 796, 995, 1580, 1592, 1990, 3160, 3491, 3980, 6982, 7960, 13964, 15721, 17455, 27928, 31442, 34910, 62884, 69820, 78605, 125768, 139640, 157210, 275789, 314420, 551578, 628840, 694709, 1103156, 1378945, 1389418, 2206312, 2757890, 2778836, 3473545, 5515780, 5557672, 6947090, 11031560, 13894180, 27788360, 54882011, 109764022, 219528044, 274410055, 439056088, 548820110, 1097640220, 2195280440]

約数ペア:

[(1, 2195280440), (2, 1097640220), (4, 548820110), (5, 439056088), (8, 274410055), (10, 219528044), (20, 109764022), (40, 54882011), (79, 27788360), (158, 13894180), (199, 11031560), (316, 6947090), (395, 5557672), (398, 5515780), (632, 3473545), (790, 2778836), (796, 2757890), (995, 2206312), (1580, 1389418), (1592, 1378945), (1990, 1103156), (3160, 694709), (3491, 628840), (3980, 551578), (6982, 314420), (7960, 275789), (13964, 157210), (15721, 139640), (17455, 125768), (27928, 78605), (31442, 69820), (34910, 62884)]