20181282820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1\times {\mathrm{3797}}^1$

素因数の和:4093

約数の個数: 96

約数和(自身を含む): 45481201920

約数和(自身を除く): 25299919100

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 71, 76, 95, 142, 190, 197, 284, 355, 380, 394, 710, 788, 985, 1349, 1420, 1970, 2698, 3743, 3797, 3940, 5396, 6745, 7486, 7594, 13490, 13987, 14972, 15188, 18715, 18985, 26980, 27974, 37430, 37970, 55948, 69935, 72143, 74860, 75940, 139870, 144286, 265753, 269587, 279740, 288572, 360715, 531506, 539174, 721430, 748009, 1063012, 1078348, 1328765, 1347935, 1442860, 1496018, 2657530, 2695870, 2992036, 3740045, 5122153, 5315060, 5391740, 7480090, 10244306, 14212171, 14960180, 20488612, 25610765, 28424342, 51221530, 53108639, 56848684, 71060855, 102443060, 106217278, 142121710, 212434556, 265543195, 284243420, 531086390, 1009064141, 1062172780, 2018128282, 4036256564, 5045320705, 10090641410, 20181282820]

約数ペア:

[(1, 20181282820), (2, 10090641410), (4, 5045320705), (5, 4036256564), (10, 2018128282), (19, 1062172780), (20, 1009064141), (38, 531086390), (71, 284243420), (76, 265543195), (95, 212434556), (142, 142121710), (190, 106217278), (197, 102443060), (284, 71060855), (355, 56848684), (380, 53108639), (394, 51221530), (710, 28424342), (788, 25610765), (985, 20488612), (1349, 14960180), (1420, 14212171), (1970, 10244306), (2698, 7480090), (3743, 5391740), (3797, 5315060), (3940, 5122153), (5396, 3740045), (6745, 2992036), (7486, 2695870), (7594, 2657530), (13490, 1496018), (13987, 1442860), (14972, 1347935), (15188, 1328765), (18715, 1078348), (18985, 1063012), (26980, 748009), (27974, 721430), (37430, 539174), (37970, 531506), (55948, 360715), (69935, 288572), (72143, 279740), (74860, 269587), (75940, 265753), (139870, 144286)]