128218905

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^2\times {\mathrm{67}}^1$

素因数の和:187

約数の個数: 72

約数和(自身を含む): 240971328

約数和(自身を除く): 112752423

約数列:

[1, 3, 5, 9, 15, 23, 43, 45, 67, 69, 115, 129, 201, 207, 215, 335, 345, 387, 603, 645, 989, 1005, 1035, 1541, 1849, 1935, 2881, 2967, 3015, 4623, 4945, 5547, 7705, 8643, 8901, 9245, 13869, 14405, 14835, 16641, 23115, 25929, 27735, 42527, 43215, 44505, 66263, 69345, 83205, 123883, 127581, 129645, 198789, 212635, 331315, 371649, 382743, 596367, 619415, 637905, 993945, 1114947, 1858245, 1913715, 2849309, 2981835, 5574735, 8547927, 14246545, 25643781, 42739635, 128218905]

約数ペア:

[(1, 128218905), (3, 42739635), (5, 25643781), (9, 14246545), (15, 8547927), (23, 5574735), (43, 2981835), (45, 2849309), (67, 1913715), (69, 1858245), (115, 1114947), (129, 993945), (201, 637905), (207, 619415), (215, 596367), (335, 382743), (345, 371649), (387, 331315), (603, 212635), (645, 198789), (989, 129645), (1005, 127581), (1035, 123883), (1541, 83205), (1849, 69345), (1935, 66263), (2881, 44505), (2967, 43215), (3015, 42527), (4623, 27735), (4945, 25929), (5547, 23115), (7705, 16641), (8643, 14835), (8901, 14405), (9245, 13869)]