19651905

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{4799}}^1$

素因数の和:4830

約数の個数: 48

約数和(自身を含む): 41932800

約数和(自身を除く): 22280895

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 35, 39, 45, 63, 65, 91, 105, 117, 195, 273, 315, 455, 585, 819, 1365, 4095, 4799, 14397, 23995, 33593, 43191, 62387, 71985, 100779, 167965, 187161, 215955, 302337, 311935, 436709, 503895, 561483, 935805, 1310127, 1511685, 2183545, 2807415, 3930381, 6550635, 19651905]

約数ペア:

[(1, 19651905), (3, 6550635), (5, 3930381), (7, 2807415), (9, 2183545), (13, 1511685), (15, 1310127), (21, 935805), (35, 561483), (39, 503895), (45, 436709), (63, 311935), (65, 302337), (91, 215955), (105, 187161), (117, 167965), (195, 100779), (273, 71985), (315, 62387), (455, 43191), (585, 33593), (819, 23995), (1365, 14397), (4095, 4799)]