20945505

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{10499}}^1$

素因数の和:10533

約数の個数: 32

約数和(自身を含む): 40320000

約数和(自身を除く): 19374495

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 95, 105, 133, 285, 399, 665, 1995, 10499, 31497, 52495, 73493, 157485, 199481, 220479, 367465, 598443, 997405, 1102395, 1396367, 2992215, 4189101, 6981835, 20945505]

約数ペア:

[(1, 20945505), (3, 6981835), (5, 4189101), (7, 2992215), (15, 1396367), (19, 1102395), (21, 997405), (35, 598443), (57, 367465), (95, 220479), (105, 199481), (133, 157485), (285, 73493), (399, 52495), (665, 31497), (1995, 10499)]