20598968

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{191}}^1$

素因数の和:288

約数の個数: 64

約数和(自身を含む): 44997120

約数和(自身を除く): 24398152

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 61, 68, 104, 122, 136, 191, 221, 244, 382, 442, 488, 764, 793, 884, 1037, 1528, 1586, 1768, 2074, 2483, 3172, 3247, 4148, 4966, 6344, 6494, 8296, 9932, 11651, 12988, 13481, 19864, 23302, 25976, 26962, 42211, 46604, 53924, 84422, 93208, 107848, 151463, 168844, 198067, 302926, 337688, 396134, 605852, 792268, 1211704, 1584536, 2574871, 5149742, 10299484, 20598968]

約数ペア:

[(1, 20598968), (2, 10299484), (4, 5149742), (8, 2574871), (13, 1584536), (17, 1211704), (26, 792268), (34, 605852), (52, 396134), (61, 337688), (68, 302926), (104, 198067), (122, 168844), (136, 151463), (191, 107848), (221, 93208), (244, 84422), (382, 53924), (442, 46604), (488, 42211), (764, 26962), (793, 25976), (884, 23302), (1037, 19864), (1528, 13481), (1586, 12988), (1768, 11651), (2074, 9932), (2483, 8296), (3172, 6494), (3247, 6344), (4148, 4966)]