21000270957

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{61}}^2\times {\mathrm{263}}^1\times {\mathrm{311}}^1$

素因数の和:722

約数の個数: 48

約数和(自身を含む): 29913421824

約数和(自身を除く): 8913150867

約数列:

[1, 3, 23, 61, 69, 183, 263, 311, 789, 933, 1403, 3721, 4209, 6049, 7153, 11163, 16043, 18147, 18971, 21459, 48129, 56913, 81793, 85583, 245379, 256749, 368989, 436333, 978623, 1106967, 1157231, 1308999, 1881239, 2935869, 3471693, 4989373, 5643717, 14968119, 22508329, 26616313, 67524987, 79848939, 114755579, 304351753, 344266737, 913055259, 7000090319, 21000270957]

約数ペア:

[(1, 21000270957), (3, 7000090319), (23, 913055259), (61, 344266737), (69, 304351753), (183, 114755579), (263, 79848939), (311, 67524987), (789, 26616313), (933, 22508329), (1403, 14968119), (3721, 5643717), (4209, 4989373), (6049, 3471693), (7153, 2935869), (11163, 1881239), (16043, 1308999), (18147, 1157231), (18971, 1106967), (21459, 978623), (48129, 436333), (56913, 368989), (81793, 256749), (85583, 245379)]