20478570

素因数分解:

$2^1\times 3^1\times 5^1\times 7^2\times {\mathrm{13931}}^1$

素因数の和:13955

約数の個数: 48

約数和(自身を含む): 57176928

約数和(自身を除く): 36698358

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 49, 70, 98, 105, 147, 210, 245, 294, 490, 735, 1470, 13931, 27862, 41793, 69655, 83586, 97517, 139310, 195034, 208965, 292551, 417930, 487585, 585102, 682619, 975170, 1365238, 1462755, 2047857, 2925510, 3413095, 4095714, 6826190, 10239285, 20478570]

約数ペア:

[(1, 20478570), (2, 10239285), (3, 6826190), (5, 4095714), (6, 3413095), (7, 2925510), (10, 2047857), (14, 1462755), (15, 1365238), (21, 975170), (30, 682619), (35, 585102), (42, 487585), (49, 417930), (70, 292551), (98, 208965), (105, 195034), (147, 139310), (210, 97517), (245, 83586), (294, 69655), (490, 41793), (735, 27862), (1470, 13931)]