19990048

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1657}}^1$

素因数の和:1709

約数の個数: 48

約数和(自身を含む): 43870680

約数和(自身を除く): 23880632

約数列:

[1, 2, 4, 8, 13, 16, 26, 29, 32, 52, 58, 104, 116, 208, 232, 377, 416, 464, 754, 928, 1508, 1657, 3016, 3314, 6032, 6628, 12064, 13256, 21541, 26512, 43082, 48053, 53024, 86164, 96106, 172328, 192212, 344656, 384424, 624689, 689312, 768848, 1249378, 1537696, 2498756, 4997512, 9995024, 19990048]

約数ペア:

[(1, 19990048), (2, 9995024), (4, 4997512), (8, 2498756), (13, 1537696), (16, 1249378), (26, 768848), (29, 689312), (32, 624689), (52, 384424), (58, 344656), (104, 192212), (116, 172328), (208, 96106), (232, 86164), (377, 53024), (416, 48053), (464, 43082), (754, 26512), (928, 21541), (1508, 13256), (1657, 12064), (3016, 6628), (3314, 6032)]