218565645

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{181}}^1\times {\mathrm{223}}^1$

素因数の和:450

約数の個数: 48

約数和(自身を含む): 372782592

約数和(自身を除く): 154216947

約数列:

[1, 3, 5, 15, 19, 57, 95, 181, 223, 285, 361, 543, 669, 905, 1083, 1115, 1805, 2715, 3345, 3439, 4237, 5415, 10317, 12711, 17195, 21185, 40363, 51585, 63555, 65341, 80503, 121089, 196023, 201815, 241509, 326705, 402515, 605445, 766897, 980115, 1207545, 2300691, 3834485, 11503455, 14571043, 43713129, 72855215, 218565645]

約数ペア:

[(1, 218565645), (3, 72855215), (5, 43713129), (15, 14571043), (19, 11503455), (57, 3834485), (95, 2300691), (181, 1207545), (223, 980115), (285, 766897), (361, 605445), (543, 402515), (669, 326705), (905, 241509), (1083, 201815), (1115, 196023), (1805, 121089), (2715, 80503), (3345, 65341), (3439, 63555), (4237, 51585), (5415, 40363), (10317, 21185), (12711, 17195)]