18968404

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^2$

素因数の和:137

約数の個数: 72

約数和(自身を含む): 43226624

約数和(自身を除く): 24258220

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 31, 41, 52, 62, 82, 91, 124, 164, 182, 217, 287, 364, 403, 434, 533, 574, 806, 868, 1066, 1148, 1271, 1612, 1681, 2132, 2542, 2821, 3362, 3731, 5084, 5642, 6724, 7462, 8897, 11284, 11767, 14924, 16523, 17794, 21853, 23534, 33046, 35588, 43706, 47068, 52111, 66092, 87412, 104222, 115661, 152971, 208444, 231322, 305942, 364777, 462644, 611884, 677443, 729554, 1354886, 1459108, 2709772, 4742101, 9484202, 18968404]

約数ペア:

[(1, 18968404), (2, 9484202), (4, 4742101), (7, 2709772), (13, 1459108), (14, 1354886), (26, 729554), (28, 677443), (31, 611884), (41, 462644), (52, 364777), (62, 305942), (82, 231322), (91, 208444), (124, 152971), (164, 115661), (182, 104222), (217, 87412), (287, 66092), (364, 52111), (403, 47068), (434, 43706), (533, 35588), (574, 33046), (806, 23534), (868, 21853), (1066, 17794), (1148, 16523), (1271, 14924), (1612, 11767), (1681, 11284), (2132, 8897), (2542, 7462), (2821, 6724), (3362, 5642), (3731, 5084)]