84647980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{311}}^1\times {\mathrm{439}}^1$

素因数の和:790

約数の個数: 48

約数和(自身を含む): 184504320

約数和(自身を除く): 99856340

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 311, 439, 620, 622, 878, 1244, 1555, 1756, 2195, 3110, 4390, 6220, 8780, 9641, 13609, 19282, 27218, 38564, 48205, 54436, 68045, 96410, 136090, 136529, 192820, 272180, 273058, 546116, 682645, 1365290, 2730580, 4232399, 8464798, 16929596, 21161995, 42323990, 84647980]

約数ペア:

[(1, 84647980), (2, 42323990), (4, 21161995), (5, 16929596), (10, 8464798), (20, 4232399), (31, 2730580), (62, 1365290), (124, 682645), (155, 546116), (310, 273058), (311, 272180), (439, 192820), (620, 136529), (622, 136090), (878, 96410), (1244, 68045), (1555, 54436), (1756, 48205), (2195, 38564), (3110, 27218), (4390, 19282), (6220, 13609), (8780, 9641)]