18490860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2389}}^1$

素因数の和:2447

約数の個数: 72

約数和(自身を含む): 57417360

約数和(自身を除く): 38926500

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 43, 45, 60, 86, 90, 129, 172, 180, 215, 258, 387, 430, 516, 645, 774, 860, 1290, 1548, 1935, 2389, 2580, 3870, 4778, 7167, 7740, 9556, 11945, 14334, 21501, 23890, 28668, 35835, 43002, 47780, 71670, 86004, 102727, 107505, 143340, 205454, 215010, 308181, 410908, 430020, 513635, 616362, 924543, 1027270, 1232724, 1540905, 1849086, 2054540, 3081810, 3698172, 4622715, 6163620, 9245430, 18490860]

約数ペア:

[(1, 18490860), (2, 9245430), (3, 6163620), (4, 4622715), (5, 3698172), (6, 3081810), (9, 2054540), (10, 1849086), (12, 1540905), (15, 1232724), (18, 1027270), (20, 924543), (30, 616362), (36, 513635), (43, 430020), (45, 410908), (60, 308181), (86, 215010), (90, 205454), (129, 143340), (172, 107505), (180, 102727), (215, 86004), (258, 71670), (387, 47780), (430, 43002), (516, 35835), (645, 28668), (774, 23890), (860, 21501), (1290, 14334), (1548, 11945), (1935, 9556), (2389, 7740), (2580, 7167), (3870, 4778)]