1644980168

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1\times {\mathrm{1303}}^1$

素因数の和:1582

約数の個数: 64

約数和(自身を含む): 3395616000

約数和(自身を除く): 1750635832

約数列:

[1, 2, 4, 8, 13, 26, 52, 61, 104, 122, 199, 244, 398, 488, 793, 796, 1303, 1586, 1592, 2587, 2606, 3172, 5174, 5212, 6344, 10348, 10424, 12139, 16939, 20696, 24278, 33878, 48556, 67756, 79483, 97112, 135512, 157807, 158966, 259297, 315614, 317932, 518594, 631228, 635864, 1033279, 1037188, 1262456, 2066558, 2074376, 3370861, 4133116, 6741722, 8266232, 13483444, 15817117, 26966888, 31634234, 63268468, 126536936, 205622521, 411245042, 822490084, 1644980168]

約数ペア:

[(1, 1644980168), (2, 822490084), (4, 411245042), (8, 205622521), (13, 126536936), (26, 63268468), (52, 31634234), (61, 26966888), (104, 15817117), (122, 13483444), (199, 8266232), (244, 6741722), (398, 4133116), (488, 3370861), (793, 2074376), (796, 2066558), (1303, 1262456), (1586, 1037188), (1592, 1033279), (2587, 635864), (2606, 631228), (3172, 518594), (5174, 317932), (5212, 315614), (6344, 259297), (10348, 158966), (10424, 157807), (12139, 135512), (16939, 97112), (20696, 79483), (24278, 67756), (33878, 48556)]