18781425

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{6421}}^1$

素因数の和:6450

約数の個数: 36

約数和(自身を含む): 36232924

約数和(自身を除く): 17451499

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 195, 225, 325, 585, 975, 2925, 6421, 19263, 32105, 57789, 83473, 96315, 160525, 250419, 288945, 417365, 481575, 751257, 1252095, 1444725, 2086825, 3756285, 6260475, 18781425]

約数ペア:

[(1, 18781425), (3, 6260475), (5, 3756285), (9, 2086825), (13, 1444725), (15, 1252095), (25, 751257), (39, 481575), (45, 417365), (65, 288945), (75, 250419), (117, 160525), (195, 96315), (225, 83473), (325, 57789), (585, 32105), (975, 19263), (2925, 6421)]