20835220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{3461}}^1$

素因数の和:3520

約数の個数: 48

約数和(自身を含む): 51182208

約数和(自身を除く): 30346988

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 70, 86, 140, 172, 215, 301, 430, 602, 860, 1204, 1505, 3010, 3461, 6020, 6922, 13844, 17305, 24227, 34610, 48454, 69220, 96908, 121135, 148823, 242270, 297646, 484540, 595292, 744115, 1041761, 1488230, 2083522, 2976460, 4167044, 5208805, 10417610, 20835220]

約数ペア:

[(1, 20835220), (2, 10417610), (4, 5208805), (5, 4167044), (7, 2976460), (10, 2083522), (14, 1488230), (20, 1041761), (28, 744115), (35, 595292), (43, 484540), (70, 297646), (86, 242270), (140, 148823), (172, 121135), (215, 96908), (301, 69220), (430, 48454), (602, 34610), (860, 24227), (1204, 17305), (1505, 13844), (3010, 6922), (3461, 6020)]