199920800

素因数分解:

$2^5\times 5^2\times {\mathrm{269}}^1\times {\mathrm{929}}^1$

素因数の和:1218

約数の個数: 72

約数和(自身を含む): 490398300

約数和(自身を除く): 290477500

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 269, 400, 538, 800, 929, 1076, 1345, 1858, 2152, 2690, 3716, 4304, 4645, 5380, 6725, 7432, 8608, 9290, 10760, 13450, 14864, 18580, 21520, 23225, 26900, 29728, 37160, 43040, 46450, 53800, 74320, 92900, 107600, 148640, 185800, 215200, 249901, 371600, 499802, 743200, 999604, 1249505, 1999208, 2499010, 3998416, 4998020, 6247525, 7996832, 9996040, 12495050, 19992080, 24990100, 39984160, 49980200, 99960400, 199920800]

約数ペア:

[(1, 199920800), (2, 99960400), (4, 49980200), (5, 39984160), (8, 24990100), (10, 19992080), (16, 12495050), (20, 9996040), (25, 7996832), (32, 6247525), (40, 4998020), (50, 3998416), (80, 2499010), (100, 1999208), (160, 1249505), (200, 999604), (269, 743200), (400, 499802), (538, 371600), (800, 249901), (929, 215200), (1076, 185800), (1345, 148640), (1858, 107600), (2152, 92900), (2690, 74320), (3716, 53800), (4304, 46450), (4645, 43040), (5380, 37160), (6725, 29728), (7432, 26900), (8608, 23225), (9290, 21520), (10760, 18580), (13450, 14864)]