21285645

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{541}}^1$

素因数の和:653

約数の個数: 32

約数和(自身を含む): 35485824

約数和(自身を除く): 14200179

約数列:

[1, 3, 5, 15, 43, 61, 129, 183, 215, 305, 541, 645, 915, 1623, 2623, 2705, 7869, 8115, 13115, 23263, 33001, 39345, 69789, 99003, 116315, 165005, 348945, 495015, 1419043, 4257129, 7095215, 21285645]

約数ペア:

[(1, 21285645), (3, 7095215), (5, 4257129), (15, 1419043), (43, 495015), (61, 348945), (129, 165005), (183, 116315), (215, 99003), (305, 69789), (541, 39345), (645, 33001), (915, 23263), (1623, 13115), (2623, 8115), (2705, 7869)]