820121420

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{97}}^1\times {\mathrm{5791}}^1$

素因数の和:5970

約数の個数: 48

約数和(自身を含む): 1764150528

約数和(自身を除く): 944029108

約数列:

[1, 2, 4, 5, 10, 20, 73, 97, 146, 194, 292, 365, 388, 485, 730, 970, 1460, 1940, 5791, 7081, 11582, 14162, 23164, 28324, 28955, 35405, 57910, 70810, 115820, 141620, 422743, 561727, 845486, 1123454, 1690972, 2113715, 2246908, 2808635, 4227430, 5617270, 8454860, 11234540, 41006071, 82012142, 164024284, 205030355, 410060710, 820121420]

約数ペア:

[(1, 820121420), (2, 410060710), (4, 205030355), (5, 164024284), (10, 82012142), (20, 41006071), (73, 11234540), (97, 8454860), (146, 5617270), (194, 4227430), (292, 2808635), (365, 2246908), (388, 2113715), (485, 1690972), (730, 1123454), (970, 845486), (1460, 561727), (1940, 422743), (5791, 141620), (7081, 115820), (11582, 70810), (14162, 57910), (23164, 35405), (28324, 28955)]