20447280

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{4057}}^1$

素因数の和:4083

約数の個数: 120

約数和(自身を含む): 78497952

約数和(自身を除く): 58050672

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 240, 252, 280, 315, 336, 360, 420, 504, 560, 630, 720, 840, 1008, 1260, 1680, 2520, 4057, 5040, 8114, 12171, 16228, 20285, 24342, 28399, 32456, 36513, 40570, 48684, 56798, 60855, 64912, 73026, 81140, 85197, 97368, 113596, 121710, 141995, 146052, 162280, 170394, 182565, 194736, 227192, 243420, 255591, 283990, 292104, 324560, 340788, 365130, 425985, 454384, 486840, 511182, 567980, 584208, 681576, 730260, 851970, 973680, 1022364, 1135960, 1277955, 1363152, 1460520, 1703940, 2044728, 2271920, 2555910, 2921040, 3407880, 4089456, 5111820, 6815760, 10223640, 20447280]

約数ペア:

[(1, 20447280), (2, 10223640), (3, 6815760), (4, 5111820), (5, 4089456), (6, 3407880), (7, 2921040), (8, 2555910), (9, 2271920), (10, 2044728), (12, 1703940), (14, 1460520), (15, 1363152), (16, 1277955), (18, 1135960), (20, 1022364), (21, 973680), (24, 851970), (28, 730260), (30, 681576), (35, 584208), (36, 567980), (40, 511182), (42, 486840), (45, 454384), (48, 425985), (56, 365130), (60, 340788), (63, 324560), (70, 292104), (72, 283990), (80, 255591), (84, 243420), (90, 227192), (105, 194736), (112, 182565), (120, 170394), (126, 162280), (140, 146052), (144, 141995), (168, 121710), (180, 113596), (210, 97368), (240, 85197), (252, 81140), (280, 73026), (315, 64912), (336, 60855), (360, 56798), (420, 48684), (504, 40570), (560, 36513), (630, 32456), (720, 28399), (840, 24342), (1008, 20285), (1260, 16228), (1680, 12171), (2520, 8114), (4057, 5040)]