20823403780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{509}}^1\times {\mathrm{541}}^1$

素因数の和:1277

約数の個数: 96

約数和(自身を含む): 46438560000

約数和(自身を除く): 25615156220

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 199, 380, 398, 509, 541, 796, 995, 1018, 1082, 1990, 2036, 2164, 2545, 2705, 3781, 3980, 5090, 5410, 7562, 9671, 10180, 10279, 10820, 15124, 18905, 19342, 20558, 37810, 38684, 41116, 48355, 51395, 75620, 96710, 101291, 102790, 107659, 193420, 202582, 205580, 215318, 275369, 405164, 430636, 506455, 538295, 550738, 1012910, 1076590, 1101476, 1376845, 1924529, 2025820, 2045521, 2153180, 2753690, 3849058, 4091042, 5232011, 5507380, 7698116, 8182084, 9622645, 10227605, 10464022, 19245290, 20455210, 20928044, 26160055, 38490580, 40910420, 52320110, 54798431, 104640220, 109596862, 219193724, 273992155, 547984310, 1041170189, 1095968620, 2082340378, 4164680756, 5205850945, 10411701890, 20823403780]

約数ペア:

[(1, 20823403780), (2, 10411701890), (4, 5205850945), (5, 4164680756), (10, 2082340378), (19, 1095968620), (20, 1041170189), (38, 547984310), (76, 273992155), (95, 219193724), (190, 109596862), (199, 104640220), (380, 54798431), (398, 52320110), (509, 40910420), (541, 38490580), (796, 26160055), (995, 20928044), (1018, 20455210), (1082, 19245290), (1990, 10464022), (2036, 10227605), (2164, 9622645), (2545, 8182084), (2705, 7698116), (3781, 5507380), (3980, 5232011), (5090, 4091042), (5410, 3849058), (7562, 2753690), (9671, 2153180), (10180, 2045521), (10279, 2025820), (10820, 1924529), (15124, 1376845), (18905, 1101476), (19342, 1076590), (20558, 1012910), (37810, 550738), (38684, 538295), (41116, 506455), (48355, 430636), (51395, 405164), (75620, 275369), (96710, 215318), (101291, 205580), (102790, 202582), (107659, 193420)]