20153618380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{947}}^1\times {\mathrm{2141}}^1$

素因数の和:3175

約数の個数: 96

約数和(自身を含む): 49124662272

約数和(自身を除く): 28971043892

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 947, 994, 1420, 1894, 1988, 2141, 2485, 3788, 4282, 4735, 4970, 6629, 8564, 9470, 9940, 10705, 13258, 14987, 18940, 21410, 26516, 29974, 33145, 42820, 59948, 66290, 67237, 74935, 132580, 134474, 149870, 152011, 268948, 299740, 304022, 336185, 470659, 608044, 672370, 760055, 941318, 1064077, 1344740, 1520110, 1882636, 2027527, 2128154, 2353295, 3040220, 4055054, 4256308, 4706590, 5320385, 8110108, 9413180, 10137635, 10640770, 14192689, 20275270, 21281540, 28385378, 40550540, 56770756, 70963445, 141926890, 143954417, 283853780, 287908834, 575817668, 719772085, 1007680919, 1439544170, 2015361838, 2879088340, 4030723676, 5038404595, 10076809190, 20153618380]

約数ペア:

[(1, 20153618380), (2, 10076809190), (4, 5038404595), (5, 4030723676), (7, 2879088340), (10, 2015361838), (14, 1439544170), (20, 1007680919), (28, 719772085), (35, 575817668), (70, 287908834), (71, 283853780), (140, 143954417), (142, 141926890), (284, 70963445), (355, 56770756), (497, 40550540), (710, 28385378), (947, 21281540), (994, 20275270), (1420, 14192689), (1894, 10640770), (1988, 10137635), (2141, 9413180), (2485, 8110108), (3788, 5320385), (4282, 4706590), (4735, 4256308), (4970, 4055054), (6629, 3040220), (8564, 2353295), (9470, 2128154), (9940, 2027527), (10705, 1882636), (13258, 1520110), (14987, 1344740), (18940, 1064077), (21410, 941318), (26516, 760055), (29974, 672370), (33145, 608044), (42820, 470659), (59948, 336185), (66290, 304022), (67237, 299740), (74935, 268948), (132580, 152011), (134474, 149870)]