4989140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{619}}^1$

素因数の和:672

約数の個数: 48

約数和(自身を含む): 11665920

約数和(自身を除く): 6676780

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 619, 620, 806, 1238, 1612, 2015, 2476, 3095, 4030, 6190, 8047, 8060, 12380, 16094, 19189, 32188, 38378, 40235, 76756, 80470, 95945, 160940, 191890, 249457, 383780, 498914, 997828, 1247285, 2494570, 4989140]

約数ペア:

[(1, 4989140), (2, 2494570), (4, 1247285), (5, 997828), (10, 498914), (13, 383780), (20, 249457), (26, 191890), (31, 160940), (52, 95945), (62, 80470), (65, 76756), (124, 40235), (130, 38378), (155, 32188), (260, 19189), (310, 16094), (403, 12380), (619, 8060), (620, 8047), (806, 6190), (1238, 4030), (1612, 3095), (2015, 2476)]