199916990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{219689}}^1$

素因数の和:219716

約数の個数: 32

約数和(自身を含む): 442895040

約数和(自身を除く): 242978050

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 182, 455, 910, 219689, 439378, 1098445, 1537823, 2196890, 2855957, 3075646, 5711914, 7689115, 14279785, 15378230, 19991699, 28559570, 39983398, 99958495, 199916990]

約数ペア:

[(1, 199916990), (2, 99958495), (5, 39983398), (7, 28559570), (10, 19991699), (13, 15378230), (14, 14279785), (26, 7689115), (35, 5711914), (65, 3075646), (70, 2855957), (91, 2196890), (130, 1537823), (182, 1098445), (455, 439378), (910, 219689)]