21477255

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{509}}^1$

素因数の和:643

約数の個数: 32

約数和(自身を含む): 35985600

約数和(自身を除く): 14508345

約数列:

[1, 3, 5, 15, 29, 87, 97, 145, 291, 435, 485, 509, 1455, 1527, 2545, 2813, 7635, 8439, 14065, 14761, 42195, 44283, 49373, 73805, 148119, 221415, 246865, 740595, 1431817, 4295451, 7159085, 21477255]

約数ペア:

[(1, 21477255), (3, 7159085), (5, 4295451), (15, 1431817), (29, 740595), (87, 246865), (97, 221415), (145, 148119), (291, 73805), (435, 49373), (485, 44283), (509, 42195), (1455, 14761), (1527, 14065), (2545, 8439), (2813, 7635)]