19495216

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{4933}}^1$

素因数の和:4973

約数の個数: 40

約数和(自身を含む): 42827120

約数和(自身を除く): 23331904

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 208, 247, 304, 494, 988, 1976, 3952, 4933, 9866, 19732, 39464, 64129, 78928, 93727, 128258, 187454, 256516, 374908, 513032, 749816, 1026064, 1218451, 1499632, 2436902, 4873804, 9747608, 19495216]

約数ペア:

[(1, 19495216), (2, 9747608), (4, 4873804), (8, 2436902), (13, 1499632), (16, 1218451), (19, 1026064), (26, 749816), (38, 513032), (52, 374908), (76, 256516), (104, 187454), (152, 128258), (208, 93727), (247, 78928), (304, 64129), (494, 39464), (988, 19732), (1976, 9866), (3952, 4933)]