21747780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{6359}}^1$

素因数の和:6393

約数の個数: 72

約数和(自身を含む): 69451200

約数和(自身を除く): 47703420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710, 3420, 6359, 12718, 19077, 25436, 31795, 38154, 57231, 63590, 76308, 95385, 114462, 120821, 127180, 190770, 228924, 241642, 286155, 362463, 381540, 483284, 572310, 604105, 724926, 1087389, 1144620, 1208210, 1449852, 1812315, 2174778, 2416420, 3624630, 4349556, 5436945, 7249260, 10873890, 21747780]

約数ペア:

[(1, 21747780), (2, 10873890), (3, 7249260), (4, 5436945), (5, 4349556), (6, 3624630), (9, 2416420), (10, 2174778), (12, 1812315), (15, 1449852), (18, 1208210), (19, 1144620), (20, 1087389), (30, 724926), (36, 604105), (38, 572310), (45, 483284), (57, 381540), (60, 362463), (76, 286155), (90, 241642), (95, 228924), (114, 190770), (171, 127180), (180, 120821), (190, 114462), (228, 95385), (285, 76308), (342, 63590), (380, 57231), (570, 38154), (684, 31795), (855, 25436), (1140, 19077), (1710, 12718), (3420, 6359)]