18795945

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1$

素因数の和:262

約数の個数: 64

約数和(自身を含む): 36900864

約数和(自身を除く): 18104919

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 43, 69, 105, 115, 129, 161, 181, 215, 301, 345, 483, 543, 645, 805, 903, 905, 989, 1267, 1505, 2415, 2715, 2967, 3801, 4163, 4515, 4945, 6335, 6923, 7783, 12489, 14835, 19005, 20769, 20815, 23349, 29141, 34615, 38915, 54481, 62445, 87423, 103845, 116745, 145705, 163443, 179009, 272405, 437115, 537027, 817215, 895045, 1253063, 2685135, 3759189, 6265315, 18795945]

約数ペア:

[(1, 18795945), (3, 6265315), (5, 3759189), (7, 2685135), (15, 1253063), (21, 895045), (23, 817215), (35, 537027), (43, 437115), (69, 272405), (105, 179009), (115, 163443), (129, 145705), (161, 116745), (181, 103845), (215, 87423), (301, 62445), (345, 54481), (483, 38915), (543, 34615), (645, 29141), (805, 23349), (903, 20815), (905, 20769), (989, 19005), (1267, 14835), (1505, 12489), (2415, 7783), (2715, 6923), (2967, 6335), (3801, 4945), (4163, 4515)]