400365

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1$

素因数の和:90

約数の個数: 48

約数和(自身を含む): 838656

約数和(自身を除く): 438291

約数列:

[1, 3, 5, 7, 9, 15, 21, 31, 35, 41, 45, 63, 93, 105, 123, 155, 205, 217, 279, 287, 315, 369, 465, 615, 651, 861, 1085, 1271, 1395, 1435, 1845, 1953, 2583, 3255, 3813, 4305, 6355, 8897, 9765, 11439, 12915, 19065, 26691, 44485, 57195, 80073, 133455, 400365]

約数ペア:

[(1, 400365), (3, 133455), (5, 80073), (7, 57195), (9, 44485), (15, 26691), (21, 19065), (31, 12915), (35, 11439), (41, 9765), (45, 8897), (63, 6355), (93, 4305), (105, 3813), (123, 3255), (155, 2583), (205, 1953), (217, 1845), (279, 1435), (287, 1395), (315, 1271), (369, 1085), (465, 861), (615, 651)]