217623420

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{172717}}^1$

素因数の和:172739

約数の個数: 72

約数和(自身を含む): 754432224

約数和(自身を除く): 536808804

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 172717, 345434, 518151, 690868, 863585, 1036302, 1209019, 1554453, 1727170, 2072604, 2418038, 2590755, 3108906, 3454340, 3627057, 4836076, 5181510, 6045095, 6217812, 7254114, 7772265, 10363020, 10881171, 12090190, 14508228, 15544530, 18135285, 21762342, 24180380, 31089060, 36270570, 43524684, 54405855, 72541140, 108811710, 217623420]

約数ペア:

[(1, 217623420), (2, 108811710), (3, 72541140), (4, 54405855), (5, 43524684), (6, 36270570), (7, 31089060), (9, 24180380), (10, 21762342), (12, 18135285), (14, 15544530), (15, 14508228), (18, 12090190), (20, 10881171), (21, 10363020), (28, 7772265), (30, 7254114), (35, 6217812), (36, 6045095), (42, 5181510), (45, 4836076), (60, 3627057), (63, 3454340), (70, 3108906), (84, 2590755), (90, 2418038), (105, 2072604), (126, 1727170), (140, 1554453), (180, 1209019), (210, 1036302), (252, 863585), (315, 690868), (420, 518151), (630, 345434), (1260, 172717)]