19905858

素因数分解:

$2^1\times 3^3\times 7^2\times {\mathrm{7523}}^1$

素因数の和:7548

約数の個数: 48

約数和(自身を含む): 51464160

約数和(自身を除く): 31558302

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 49, 54, 63, 98, 126, 147, 189, 294, 378, 441, 882, 1323, 2646, 7523, 15046, 22569, 45138, 52661, 67707, 105322, 135414, 157983, 203121, 315966, 368627, 406242, 473949, 737254, 947898, 1105881, 1421847, 2211762, 2843694, 3317643, 6635286, 9952929, 19905858]

約数ペア:

[(1, 19905858), (2, 9952929), (3, 6635286), (6, 3317643), (7, 2843694), (9, 2211762), (14, 1421847), (18, 1105881), (21, 947898), (27, 737254), (42, 473949), (49, 406242), (54, 368627), (63, 315966), (98, 203121), (126, 157983), (147, 135414), (189, 105322), (294, 67707), (378, 52661), (441, 45138), (882, 22569), (1323, 15046), (2646, 7523)]