18795465

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{89}}^1$

素因数の和:151

約数の個数: 72

約数和(自身を含む): 37444680

約数和(自身を除く): 18649215

約数列:

[1, 3, 5, 9, 13, 15, 19, 39, 45, 57, 65, 89, 95, 117, 171, 195, 247, 267, 285, 361, 445, 585, 741, 801, 855, 1083, 1157, 1235, 1335, 1691, 1805, 2223, 3249, 3471, 3705, 4005, 4693, 5073, 5415, 5785, 8455, 10413, 11115, 14079, 15219, 16245, 17355, 21983, 23465, 25365, 32129, 42237, 52065, 65949, 70395, 76095, 96387, 109915, 160645, 197847, 211185, 289161, 329745, 417677, 481935, 989235, 1253031, 1445805, 2088385, 3759093, 6265155, 18795465]

約数ペア:

[(1, 18795465), (3, 6265155), (5, 3759093), (9, 2088385), (13, 1445805), (15, 1253031), (19, 989235), (39, 481935), (45, 417677), (57, 329745), (65, 289161), (89, 211185), (95, 197847), (117, 160645), (171, 109915), (195, 96387), (247, 76095), (267, 70395), (285, 65949), (361, 52065), (445, 42237), (585, 32129), (741, 25365), (801, 23465), (855, 21983), (1083, 17355), (1157, 16245), (1235, 15219), (1335, 14079), (1691, 11115), (1805, 10413), (2223, 8455), (3249, 5785), (3471, 5415), (3705, 5073), (4005, 4693)]