21344805

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{503}}^1$

素因数の和:578

約数の個数: 48

約数和(自身を含む): 39626496

約数和(自身を除く): 18281691

約数列:

[1, 3, 5, 9, 15, 23, 41, 45, 69, 115, 123, 205, 207, 345, 369, 503, 615, 943, 1035, 1509, 1845, 2515, 2829, 4527, 4715, 7545, 8487, 11569, 14145, 20623, 22635, 34707, 42435, 57845, 61869, 103115, 104121, 173535, 185607, 309345, 474329, 520605, 928035, 1422987, 2371645, 4268961, 7114935, 21344805]

約数ペア:

[(1, 21344805), (3, 7114935), (5, 4268961), (9, 2371645), (15, 1422987), (23, 928035), (41, 520605), (45, 474329), (69, 309345), (115, 185607), (123, 173535), (205, 104121), (207, 103115), (345, 61869), (369, 57845), (503, 42435), (615, 34707), (943, 22635), (1035, 20623), (1509, 14145), (1845, 11569), (2515, 8487), (2829, 7545), (4527, 4715)]