19644525

素因数分解:

$3^4\times 5^2\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:220

約数の個数: 60

約数和(自身を含む): 37134900

約数和(自身を除く): 17490375

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 89, 109, 135, 225, 267, 327, 405, 445, 545, 675, 801, 981, 1335, 1635, 2025, 2225, 2403, 2725, 2943, 4005, 4905, 6675, 7209, 8175, 8829, 9701, 12015, 14715, 20025, 24525, 29103, 36045, 44145, 48505, 60075, 73575, 87309, 145515, 180225, 220725, 242525, 261927, 436545, 727575, 785781, 1309635, 2182725, 3928905, 6548175, 19644525]

約数ペア:

[(1, 19644525), (3, 6548175), (5, 3928905), (9, 2182725), (15, 1309635), (25, 785781), (27, 727575), (45, 436545), (75, 261927), (81, 242525), (89, 220725), (109, 180225), (135, 145515), (225, 87309), (267, 73575), (327, 60075), (405, 48505), (445, 44145), (545, 36045), (675, 29103), (801, 24525), (981, 20025), (1335, 14715), (1635, 12015), (2025, 9701), (2225, 8829), (2403, 8175), (2725, 7209), (2943, 6675), (4005, 4905)]