20576080

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{181}}^1$

素因数の和:237

約数の個数: 120

約数和(自身を含む): 57886920

約数和(自身を除く): 37310840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 35, 40, 49, 56, 58, 70, 80, 98, 112, 116, 140, 145, 181, 196, 203, 232, 245, 280, 290, 362, 392, 406, 464, 490, 560, 580, 724, 784, 812, 905, 980, 1015, 1160, 1267, 1421, 1448, 1624, 1810, 1960, 2030, 2320, 2534, 2842, 2896, 3248, 3620, 3920, 4060, 5068, 5249, 5684, 6335, 7105, 7240, 8120, 8869, 10136, 10498, 11368, 12670, 14210, 14480, 16240, 17738, 20272, 20996, 22736, 25340, 26245, 28420, 35476, 36743, 41992, 44345, 50680, 52490, 56840, 70952, 73486, 83984, 88690, 101360, 104980, 113680, 141904, 146972, 177380, 183715, 209960, 257201, 293944, 354760, 367430, 419920, 514402, 587888, 709520, 734860, 1028804, 1286005, 1469720, 2057608, 2572010, 2939440, 4115216, 5144020, 10288040, 20576080]

約数ペア:

[(1, 20576080), (2, 10288040), (4, 5144020), (5, 4115216), (7, 2939440), (8, 2572010), (10, 2057608), (14, 1469720), (16, 1286005), (20, 1028804), (28, 734860), (29, 709520), (35, 587888), (40, 514402), (49, 419920), (56, 367430), (58, 354760), (70, 293944), (80, 257201), (98, 209960), (112, 183715), (116, 177380), (140, 146972), (145, 141904), (181, 113680), (196, 104980), (203, 101360), (232, 88690), (245, 83984), (280, 73486), (290, 70952), (362, 56840), (392, 52490), (406, 50680), (464, 44345), (490, 41992), (560, 36743), (580, 35476), (724, 28420), (784, 26245), (812, 25340), (905, 22736), (980, 20996), (1015, 20272), (1160, 17738), (1267, 16240), (1421, 14480), (1448, 14210), (1624, 12670), (1810, 11368), (1960, 10498), (2030, 10136), (2320, 8869), (2534, 8120), (2842, 7240), (2896, 7105), (3248, 6335), (3620, 5684), (3920, 5249), (4060, 5068)]