20509580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{191}}^1$

素因数の和:279

約数の個数: 96

約数和(自身を含む): 54190080

約数和(自身を除く): 33680500

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 59, 65, 70, 91, 118, 130, 140, 182, 191, 236, 260, 295, 364, 382, 413, 455, 590, 764, 767, 826, 910, 955, 1180, 1337, 1534, 1652, 1820, 1910, 2065, 2483, 2674, 3068, 3820, 3835, 4130, 4966, 5348, 5369, 6685, 7670, 8260, 9932, 10738, 11269, 12415, 13370, 15340, 17381, 21476, 22538, 24830, 26740, 26845, 34762, 45076, 49660, 53690, 56345, 69524, 78883, 86905, 107380, 112690, 146497, 157766, 173810, 225380, 292994, 315532, 347620, 394415, 585988, 732485, 788830, 1025479, 1464970, 1577660, 2050958, 2929940, 4101916, 5127395, 10254790, 20509580]

約数ペア:

[(1, 20509580), (2, 10254790), (4, 5127395), (5, 4101916), (7, 2929940), (10, 2050958), (13, 1577660), (14, 1464970), (20, 1025479), (26, 788830), (28, 732485), (35, 585988), (52, 394415), (59, 347620), (65, 315532), (70, 292994), (91, 225380), (118, 173810), (130, 157766), (140, 146497), (182, 112690), (191, 107380), (236, 86905), (260, 78883), (295, 69524), (364, 56345), (382, 53690), (413, 49660), (455, 45076), (590, 34762), (764, 26845), (767, 26740), (826, 24830), (910, 22538), (955, 21476), (1180, 17381), (1337, 15340), (1534, 13370), (1652, 12415), (1820, 11269), (1910, 10738), (2065, 9932), (2483, 8260), (2674, 7670), (3068, 6685), (3820, 5369), (3835, 5348), (4130, 4966)]