20825415

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{367}}^1$

素因数の和:488

約数の個数: 48

約数和(自身を含む): 39381888

約数和(自身を除く): 18556473

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 97, 117, 195, 291, 367, 485, 585, 873, 1101, 1261, 1455, 1835, 3303, 3783, 4365, 4771, 5505, 6305, 11349, 14313, 16515, 18915, 23855, 35599, 42939, 56745, 71565, 106797, 177995, 214695, 320391, 462787, 533985, 1388361, 1601955, 2313935, 4165083, 6941805, 20825415]

約数ペア:

[(1, 20825415), (3, 6941805), (5, 4165083), (9, 2313935), (13, 1601955), (15, 1388361), (39, 533985), (45, 462787), (65, 320391), (97, 214695), (117, 177995), (195, 106797), (291, 71565), (367, 56745), (485, 42939), (585, 35599), (873, 23855), (1101, 18915), (1261, 16515), (1455, 14313), (1835, 11349), (3303, 6305), (3783, 5505), (4365, 4771)]