642400

素因数分解:

$2^5\times 5^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1$

素因数の和:104

約数の個数: 72

約数和(自身を含む): 1734264

約数和(自身を除く): 1091864

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 32, 40, 44, 50, 55, 73, 80, 88, 100, 110, 146, 160, 176, 200, 220, 275, 292, 352, 365, 400, 440, 550, 584, 730, 800, 803, 880, 1100, 1168, 1460, 1606, 1760, 1825, 2200, 2336, 2920, 3212, 3650, 4015, 4400, 5840, 6424, 7300, 8030, 8800, 11680, 12848, 14600, 16060, 20075, 25696, 29200, 32120, 40150, 58400, 64240, 80300, 128480, 160600, 321200, 642400]

約数ペア:

[(1, 642400), (2, 321200), (4, 160600), (5, 128480), (8, 80300), (10, 64240), (11, 58400), (16, 40150), (20, 32120), (22, 29200), (25, 25696), (32, 20075), (40, 16060), (44, 14600), (50, 12848), (55, 11680), (73, 8800), (80, 8030), (88, 7300), (100, 6424), (110, 5840), (146, 4400), (160, 4015), (176, 3650), (200, 3212), (220, 2920), (275, 2336), (292, 2200), (352, 1825), (365, 1760), (400, 1606), (440, 1460), (550, 1168), (584, 1100), (730, 880), (800, 803)]