247399840

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^2\times {\mathrm{1609}}^1$

素因数の和:1686

約数の個数: 72

約数和(自身を含む): 604319940

約数和(自身を除く): 356920100

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 961, 992, 1240, 1609, 1922, 2480, 3218, 3844, 4805, 4960, 6436, 7688, 8045, 9610, 12872, 15376, 16090, 19220, 25744, 30752, 32180, 38440, 49879, 51488, 64360, 76880, 99758, 128720, 153760, 199516, 249395, 257440, 399032, 498790, 798064, 997580, 1546249, 1596128, 1995160, 3092498, 3990320, 6184996, 7731245, 7980640, 12369992, 15462490, 24739984, 30924980, 49479968, 61849960, 123699920, 247399840]

約数ペア:

[(1, 247399840), (2, 123699920), (4, 61849960), (5, 49479968), (8, 30924980), (10, 24739984), (16, 15462490), (20, 12369992), (31, 7980640), (32, 7731245), (40, 6184996), (62, 3990320), (80, 3092498), (124, 1995160), (155, 1596128), (160, 1546249), (248, 997580), (310, 798064), (496, 498790), (620, 399032), (961, 257440), (992, 249395), (1240, 199516), (1609, 153760), (1922, 128720), (2480, 99758), (3218, 76880), (3844, 64360), (4805, 51488), (4960, 49879), (6436, 38440), (7688, 32180), (8045, 30752), (9610, 25744), (12872, 19220), (15376, 16090)]