20887740

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{823}}^1$

素因数の和:888

約数の個数: 96

約数和(自身を含む): 66447360

約数和(自身を除く): 45559620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 47, 54, 60, 90, 94, 108, 135, 141, 180, 188, 235, 270, 282, 423, 470, 540, 564, 705, 823, 846, 940, 1269, 1410, 1646, 1692, 2115, 2469, 2538, 2820, 3292, 4115, 4230, 4938, 5076, 6345, 7407, 8230, 8460, 9876, 12345, 12690, 14814, 16460, 22221, 24690, 25380, 29628, 37035, 38681, 44442, 49380, 74070, 77362, 88884, 111105, 116043, 148140, 154724, 193405, 222210, 232086, 348129, 386810, 444420, 464172, 580215, 696258, 773620, 1044387, 1160430, 1392516, 1740645, 2088774, 2320860, 3481290, 4177548, 5221935, 6962580, 10443870, 20887740]

約数ペア:

[(1, 20887740), (2, 10443870), (3, 6962580), (4, 5221935), (5, 4177548), (6, 3481290), (9, 2320860), (10, 2088774), (12, 1740645), (15, 1392516), (18, 1160430), (20, 1044387), (27, 773620), (30, 696258), (36, 580215), (45, 464172), (47, 444420), (54, 386810), (60, 348129), (90, 232086), (94, 222210), (108, 193405), (135, 154724), (141, 148140), (180, 116043), (188, 111105), (235, 88884), (270, 77362), (282, 74070), (423, 49380), (470, 44442), (540, 38681), (564, 37035), (705, 29628), (823, 25380), (846, 24690), (940, 22221), (1269, 16460), (1410, 14814), (1646, 12690), (1692, 12345), (2115, 9876), (2469, 8460), (2538, 8230), (2820, 7407), (3292, 6345), (4115, 5076), (4230, 4938)]