21507206

素因数分解:

$2^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{421}}^1$

素因数の和:560

約数の個数: 32

約数和(自身を含む): 38283840

約数和(自身を除く): 16776634

約数列:

[1, 2, 7, 14, 41, 82, 89, 178, 287, 421, 574, 623, 842, 1246, 2947, 3649, 5894, 7298, 17261, 25543, 34522, 37469, 51086, 74938, 120827, 241654, 262283, 524566, 1536229, 3072458, 10753603, 21507206]

約数ペア:

[(1, 21507206), (2, 10753603), (7, 3072458), (14, 1536229), (41, 524566), (82, 262283), (89, 241654), (178, 120827), (287, 74938), (421, 51086), (574, 37469), (623, 34522), (842, 25543), (1246, 17261), (2947, 7298), (3649, 5894)]