19664320

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{163}}^1$

素因数の和:222

約数の個数: 112

約数和(自身を含む): 52486560

約数和(自身を除く): 32822240

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 29, 32, 40, 52, 58, 64, 65, 80, 104, 116, 130, 145, 160, 163, 208, 232, 260, 290, 320, 326, 377, 416, 464, 520, 580, 652, 754, 815, 832, 928, 1040, 1160, 1304, 1508, 1630, 1856, 1885, 2080, 2119, 2320, 2608, 3016, 3260, 3770, 4160, 4238, 4640, 4727, 5216, 6032, 6520, 7540, 8476, 9280, 9454, 10432, 10595, 12064, 13040, 15080, 16952, 18908, 21190, 23635, 24128, 26080, 30160, 33904, 37816, 42380, 47270, 52160, 60320, 61451, 67808, 75632, 84760, 94540, 120640, 122902, 135616, 151264, 169520, 189080, 245804, 302528, 307255, 339040, 378160, 491608, 614510, 678080, 756320, 983216, 1229020, 1512640, 1966432, 2458040, 3932864, 4916080, 9832160, 19664320]

約数ペア:

[(1, 19664320), (2, 9832160), (4, 4916080), (5, 3932864), (8, 2458040), (10, 1966432), (13, 1512640), (16, 1229020), (20, 983216), (26, 756320), (29, 678080), (32, 614510), (40, 491608), (52, 378160), (58, 339040), (64, 307255), (65, 302528), (80, 245804), (104, 189080), (116, 169520), (130, 151264), (145, 135616), (160, 122902), (163, 120640), (208, 94540), (232, 84760), (260, 75632), (290, 67808), (320, 61451), (326, 60320), (377, 52160), (416, 47270), (464, 42380), (520, 37816), (580, 33904), (652, 30160), (754, 26080), (815, 24128), (832, 23635), (928, 21190), (1040, 18908), (1160, 16952), (1304, 15080), (1508, 13040), (1630, 12064), (1856, 10595), (1885, 10432), (2080, 9454), (2119, 9280), (2320, 8476), (2608, 7540), (3016, 6520), (3260, 6032), (3770, 5216), (4160, 4727), (4238, 4640)]