128420720

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{94427}}^1$

素因数の和:94457

約数の個数: 40

約数和(自身を含む): 316144944

約数和(自身を除く): 187724224

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 94427, 188854, 377708, 472135, 755416, 944270, 1510832, 1605259, 1888540, 3210518, 3777080, 6421036, 7554160, 8026295, 12842072, 16052590, 25684144, 32105180, 64210360, 128420720]

約数ペア:

[(1, 128420720), (2, 64210360), (4, 32105180), (5, 25684144), (8, 16052590), (10, 12842072), (16, 8026295), (17, 7554160), (20, 6421036), (34, 3777080), (40, 3210518), (68, 1888540), (80, 1605259), (85, 1510832), (136, 944270), (170, 755416), (272, 472135), (340, 377708), (680, 188854), (1360, 94427)]