20949435

素因数分解:

$3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{173}}^1$

素因数の和:226

約数の個数: 80

約数和(自身を含む): 42444864

約数和(自身を除く): 21495429

約数列:

[1, 3, 5, 9, 13, 15, 23, 27, 39, 45, 65, 69, 81, 115, 117, 135, 173, 195, 207, 299, 345, 351, 405, 519, 585, 621, 865, 897, 1035, 1053, 1495, 1557, 1755, 1863, 2249, 2595, 2691, 3105, 3979, 4485, 4671, 5265, 6747, 7785, 8073, 9315, 11245, 11937, 13455, 14013, 19895, 20241, 23355, 24219, 33735, 35811, 40365, 51727, 59685, 60723, 70065, 101205, 107433, 121095, 155181, 179055, 182169, 258635, 303615, 322299, 465543, 537165, 775905, 910845, 1396629, 1611495, 2327715, 4189887, 6983145, 20949435]

約数ペア:

[(1, 20949435), (3, 6983145), (5, 4189887), (9, 2327715), (13, 1611495), (15, 1396629), (23, 910845), (27, 775905), (39, 537165), (45, 465543), (65, 322299), (69, 303615), (81, 258635), (115, 182169), (117, 179055), (135, 155181), (173, 121095), (195, 107433), (207, 101205), (299, 70065), (345, 60723), (351, 59685), (405, 51727), (519, 40365), (585, 35811), (621, 33735), (865, 24219), (897, 23355), (1035, 20241), (1053, 19895), (1495, 14013), (1557, 13455), (1755, 11937), (1863, 11245), (2249, 9315), (2595, 8073), (2691, 7785), (3105, 6747), (3979, 5265), (4485, 4671)]