20204940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{659}}^1$

素因数の和:751

約数の個数: 96

約数和(自身を含む): 65640960

約数和(自身を除く): 45436020

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 73, 84, 105, 140, 146, 210, 219, 292, 365, 420, 438, 511, 659, 730, 876, 1022, 1095, 1318, 1460, 1533, 1977, 2044, 2190, 2555, 2636, 3066, 3295, 3954, 4380, 4613, 5110, 6132, 6590, 7665, 7908, 9226, 9885, 10220, 13180, 13839, 15330, 18452, 19770, 23065, 27678, 30660, 39540, 46130, 48107, 55356, 69195, 92260, 96214, 138390, 144321, 192428, 240535, 276780, 288642, 336749, 481070, 577284, 673498, 721605, 962140, 1010247, 1346996, 1443210, 1683745, 2020494, 2886420, 3367490, 4040988, 5051235, 6734980, 10102470, 20204940]

約数ペア:

[(1, 20204940), (2, 10102470), (3, 6734980), (4, 5051235), (5, 4040988), (6, 3367490), (7, 2886420), (10, 2020494), (12, 1683745), (14, 1443210), (15, 1346996), (20, 1010247), (21, 962140), (28, 721605), (30, 673498), (35, 577284), (42, 481070), (60, 336749), (70, 288642), (73, 276780), (84, 240535), (105, 192428), (140, 144321), (146, 138390), (210, 96214), (219, 92260), (292, 69195), (365, 55356), (420, 48107), (438, 46130), (511, 39540), (659, 30660), (730, 27678), (876, 23065), (1022, 19770), (1095, 18452), (1318, 15330), (1460, 13839), (1533, 13180), (1977, 10220), (2044, 9885), (2190, 9226), (2555, 7908), (2636, 7665), (3066, 6590), (3295, 6132), (3954, 5110), (4380, 4613)]