19940175

素因数分解:

$3^4\times 5^2\times {\mathrm{43}}^1\times {\mathrm{229}}^1$

素因数の和:294

約数の個数: 60

約数和(自身を含む): 37960120

約数和(自身を除く): 18019945

約数列:

[1, 3, 5, 9, 15, 25, 27, 43, 45, 75, 81, 129, 135, 215, 225, 229, 387, 405, 645, 675, 687, 1075, 1145, 1161, 1935, 2025, 2061, 3225, 3435, 3483, 5725, 5805, 6183, 9675, 9847, 10305, 17175, 17415, 18549, 29025, 29541, 30915, 49235, 51525, 87075, 88623, 92745, 147705, 154575, 246175, 265869, 443115, 463725, 738525, 797607, 1329345, 2215575, 3988035, 6646725, 19940175]

約数ペア:

[(1, 19940175), (3, 6646725), (5, 3988035), (9, 2215575), (15, 1329345), (25, 797607), (27, 738525), (43, 463725), (45, 443115), (75, 265869), (81, 246175), (129, 154575), (135, 147705), (215, 92745), (225, 88623), (229, 87075), (387, 51525), (405, 49235), (645, 30915), (675, 29541), (687, 29025), (1075, 18549), (1145, 17415), (1161, 17175), (1935, 10305), (2025, 9847), (2061, 9675), (3225, 6183), (3435, 5805), (3483, 5725)]