20494240

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{167}}^1$

素因数の和:254

約数の個数: 96

約数和(自身を含む): 53343360

約数和(自身を除く): 32849120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 59, 65, 80, 104, 118, 130, 160, 167, 208, 236, 260, 295, 334, 416, 472, 520, 590, 668, 767, 835, 944, 1040, 1180, 1336, 1534, 1670, 1888, 2080, 2171, 2360, 2672, 3068, 3340, 3835, 4342, 4720, 5344, 6136, 6680, 7670, 8684, 9440, 9853, 10855, 12272, 13360, 15340, 17368, 19706, 21710, 24544, 26720, 30680, 34736, 39412, 43420, 49265, 61360, 69472, 78824, 86840, 98530, 122720, 128089, 157648, 173680, 197060, 256178, 315296, 347360, 394120, 512356, 640445, 788240, 1024712, 1280890, 1576480, 2049424, 2561780, 4098848, 5123560, 10247120, 20494240]

約数ペア:

[(1, 20494240), (2, 10247120), (4, 5123560), (5, 4098848), (8, 2561780), (10, 2049424), (13, 1576480), (16, 1280890), (20, 1024712), (26, 788240), (32, 640445), (40, 512356), (52, 394120), (59, 347360), (65, 315296), (80, 256178), (104, 197060), (118, 173680), (130, 157648), (160, 128089), (167, 122720), (208, 98530), (236, 86840), (260, 78824), (295, 69472), (334, 61360), (416, 49265), (472, 43420), (520, 39412), (590, 34736), (668, 30680), (767, 26720), (835, 24544), (944, 21710), (1040, 19706), (1180, 17368), (1336, 15340), (1534, 13360), (1670, 12272), (1888, 10855), (2080, 9853), (2171, 9440), (2360, 8684), (2672, 7670), (3068, 6680), (3340, 6136), (3835, 5344), (4342, 4720)]