21625425

素因数分解:

$3^2\times 5^2\times {\mathrm{223}}^1\times {\mathrm{431}}^1$

素因数の和:670

約数の個数: 36

約数和(自身を含む): 38997504

約数和(自身を除く): 17372079

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 223, 225, 431, 669, 1115, 1293, 2007, 2155, 3345, 3879, 5575, 6465, 10035, 10775, 16725, 19395, 32325, 50175, 96113, 96975, 288339, 480565, 865017, 1441695, 2402825, 4325085, 7208475, 21625425]

約数ペア:

[(1, 21625425), (3, 7208475), (5, 4325085), (9, 2402825), (15, 1441695), (25, 865017), (45, 480565), (75, 288339), (223, 96975), (225, 96113), (431, 50175), (669, 32325), (1115, 19395), (1293, 16725), (2007, 10775), (2155, 10035), (3345, 6465), (3879, 5575)]