245637500

素因数分解:

$2^2\times 5^5\times {\mathrm{43}}^1\times {\mathrm{457}}^1$

素因数の和:529

約数の個数: 72

約数和(自身を含む): 550995984

約数和(自身を除く): 305358484

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 125, 172, 215, 250, 430, 457, 500, 625, 860, 914, 1075, 1250, 1828, 2150, 2285, 2500, 3125, 4300, 4570, 5375, 6250, 9140, 10750, 11425, 12500, 19651, 21500, 22850, 26875, 39302, 45700, 53750, 57125, 78604, 98255, 107500, 114250, 134375, 196510, 228500, 268750, 285625, 393020, 491275, 537500, 571250, 982550, 1142500, 1428125, 1965100, 2456375, 2856250, 4912750, 5712500, 9825500, 12281875, 24563750, 49127500, 61409375, 122818750, 245637500]

約数ペア:

[(1, 245637500), (2, 122818750), (4, 61409375), (5, 49127500), (10, 24563750), (20, 12281875), (25, 9825500), (43, 5712500), (50, 4912750), (86, 2856250), (100, 2456375), (125, 1965100), (172, 1428125), (215, 1142500), (250, 982550), (430, 571250), (457, 537500), (500, 491275), (625, 393020), (860, 285625), (914, 268750), (1075, 228500), (1250, 196510), (1828, 134375), (2150, 114250), (2285, 107500), (2500, 98255), (3125, 78604), (4300, 57125), (4570, 53750), (5375, 45700), (6250, 39302), (9140, 26875), (10750, 22850), (11425, 21500), (12500, 19651)]