20842150

素因数分解:

$2^1\times 5^2\times 7^2\times {\mathrm{47}}^1\times {\mathrm{181}}^1$

素因数の和:254

約数の個数: 72

約数和(自身を含む): 46309536

約数和(自身を除く): 25467386

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 47, 49, 50, 70, 94, 98, 175, 181, 235, 245, 329, 350, 362, 470, 490, 658, 905, 1175, 1225, 1267, 1645, 1810, 2303, 2350, 2450, 2534, 3290, 4525, 4606, 6335, 8225, 8507, 8869, 9050, 11515, 12670, 16450, 17014, 17738, 23030, 31675, 42535, 44345, 57575, 59549, 63350, 85070, 88690, 115150, 119098, 212675, 221725, 297745, 416843, 425350, 443450, 595490, 833686, 1488725, 2084215, 2977450, 4168430, 10421075, 20842150]

約数ペア:

[(1, 20842150), (2, 10421075), (5, 4168430), (7, 2977450), (10, 2084215), (14, 1488725), (25, 833686), (35, 595490), (47, 443450), (49, 425350), (50, 416843), (70, 297745), (94, 221725), (98, 212675), (175, 119098), (181, 115150), (235, 88690), (245, 85070), (329, 63350), (350, 59549), (362, 57575), (470, 44345), (490, 42535), (658, 31675), (905, 23030), (1175, 17738), (1225, 17014), (1267, 16450), (1645, 12670), (1810, 11515), (2303, 9050), (2350, 8869), (2450, 8507), (2534, 8225), (3290, 6335), (4525, 4606)]