19402838

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1$

素因数の和:253

約数の個数: 64

約数和(自身を含む): 39137280

約数和(自身を除く): 19734442

約数列:

[1, 2, 7, 13, 14, 19, 26, 31, 38, 62, 91, 133, 181, 182, 217, 247, 266, 362, 403, 434, 494, 589, 806, 1178, 1267, 1729, 2353, 2534, 2821, 3439, 3458, 4123, 4706, 5611, 5642, 6878, 7657, 8246, 11222, 15314, 16471, 24073, 32942, 39277, 44707, 48146, 53599, 72943, 78554, 89414, 106609, 107198, 145886, 213218, 312949, 510601, 625898, 746263, 1021202, 1385917, 1492526, 2771834, 9701419, 19402838]

約数ペア:

[(1, 19402838), (2, 9701419), (7, 2771834), (13, 1492526), (14, 1385917), (19, 1021202), (26, 746263), (31, 625898), (38, 510601), (62, 312949), (91, 213218), (133, 145886), (181, 107198), (182, 106609), (217, 89414), (247, 78554), (266, 72943), (362, 53599), (403, 48146), (434, 44707), (494, 39277), (589, 32942), (806, 24073), (1178, 16471), (1267, 15314), (1729, 11222), (2353, 8246), (2534, 7657), (2821, 6878), (3439, 5642), (3458, 5611), (4123, 4706)]