19991914

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{241}}^1$

素因数の和:358

約数の個数: 32

約数和(自身を含む): 33105600

約数和(自身を除く): 13113686

約数列:

[1, 2, 19, 37, 38, 59, 74, 118, 241, 482, 703, 1121, 1406, 2183, 2242, 4366, 4579, 8917, 9158, 14219, 17834, 28438, 41477, 82954, 169423, 270161, 338846, 526103, 540322, 1052206, 9995957, 19991914]

約数ペア:

[(1, 19991914), (2, 9995957), (19, 1052206), (37, 540322), (38, 526103), (59, 338846), (74, 270161), (118, 169423), (241, 82954), (482, 41477), (703, 28438), (1121, 17834), (1406, 14219), (2183, 9158), (2242, 8917), (4366, 4579)]