19982104

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{197}}^1\times {\mathrm{409}}^1$

素因数の和:643

約数の個数: 32

約数和(自身を含む): 38966400

約数和(自身を除く): 18984296

約数列:

[1, 2, 4, 8, 31, 62, 124, 197, 248, 394, 409, 788, 818, 1576, 1636, 3272, 6107, 12214, 12679, 24428, 25358, 48856, 50716, 80573, 101432, 161146, 322292, 644584, 2497763, 4995526, 9991052, 19982104]

約数ペア:

[(1, 19982104), (2, 9991052), (4, 4995526), (8, 2497763), (31, 644584), (62, 322292), (124, 161146), (197, 101432), (248, 80573), (394, 50716), (409, 48856), (788, 25358), (818, 24428), (1576, 12679), (1636, 12214), (3272, 6107)]