19488280

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{163}}^1$

素因数の和:249

約数の個数: 96

約数和(自身を含む): 52161840

約数和(自身を除く): 32673560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 61, 70, 98, 122, 140, 163, 196, 244, 245, 280, 305, 326, 392, 427, 488, 490, 610, 652, 815, 854, 980, 1141, 1220, 1304, 1630, 1708, 1960, 2135, 2282, 2440, 2989, 3260, 3416, 4270, 4564, 5705, 5978, 6520, 7987, 8540, 9128, 9943, 11410, 11956, 14945, 15974, 17080, 19886, 22820, 23912, 29890, 31948, 39772, 39935, 45640, 49715, 59780, 63896, 69601, 79544, 79870, 99430, 119560, 139202, 159740, 198860, 278404, 319480, 348005, 397720, 487207, 556808, 696010, 974414, 1392020, 1948828, 2436035, 2784040, 3897656, 4872070, 9744140, 19488280]

約数ペア:

[(1, 19488280), (2, 9744140), (4, 4872070), (5, 3897656), (7, 2784040), (8, 2436035), (10, 1948828), (14, 1392020), (20, 974414), (28, 696010), (35, 556808), (40, 487207), (49, 397720), (56, 348005), (61, 319480), (70, 278404), (98, 198860), (122, 159740), (140, 139202), (163, 119560), (196, 99430), (244, 79870), (245, 79544), (280, 69601), (305, 63896), (326, 59780), (392, 49715), (427, 45640), (488, 39935), (490, 39772), (610, 31948), (652, 29890), (815, 23912), (854, 22820), (980, 19886), (1141, 17080), (1220, 15974), (1304, 14945), (1630, 11956), (1708, 11410), (1960, 9943), (2135, 9128), (2282, 8540), (2440, 7987), (2989, 6520), (3260, 5978), (3416, 5705), (4270, 4564)]