19959209552

素因数分解:

$2^4\times {\mathrm{37}}^2\times {\mathrm{43}}^1\times {\mathrm{21191}}^1$

素因数の和:21316

約数の個数: 60

約数和(自身を含む): 40670584416

約数和(自身を除く): 20711374864

約数列:

[1, 2, 4, 8, 16, 37, 43, 74, 86, 148, 172, 296, 344, 592, 688, 1369, 1591, 2738, 3182, 5476, 6364, 10952, 12728, 21191, 21904, 25456, 42382, 58867, 84764, 117734, 169528, 235468, 339056, 470936, 784067, 911213, 941872, 1568134, 1822426, 3136268, 3644852, 6272536, 7289704, 12545072, 14579408, 29010479, 33714881, 58020958, 67429762, 116041916, 134859524, 232083832, 269719048, 464167664, 539438096, 1247450597, 2494901194, 4989802388, 9979604776, 19959209552]

約数ペア:

[(1, 19959209552), (2, 9979604776), (4, 4989802388), (8, 2494901194), (16, 1247450597), (37, 539438096), (43, 464167664), (74, 269719048), (86, 232083832), (148, 134859524), (172, 116041916), (296, 67429762), (344, 58020958), (592, 33714881), (688, 29010479), (1369, 14579408), (1591, 12545072), (2738, 7289704), (3182, 6272536), (5476, 3644852), (6364, 3136268), (10952, 1822426), (12728, 1568134), (21191, 941872), (21904, 911213), (25456, 784067), (42382, 470936), (58867, 339056), (84764, 235468), (117734, 169528)]