9919820

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{173}}^1$

素因数の和:290

約数の個数: 48

約数和(自身を含む): 21748608

約数和(自身を除く): 11828788

約数列:

[1, 2, 4, 5, 10, 20, 47, 61, 94, 122, 173, 188, 235, 244, 305, 346, 470, 610, 692, 865, 940, 1220, 1730, 2867, 3460, 5734, 8131, 10553, 11468, 14335, 16262, 21106, 28670, 32524, 40655, 42212, 52765, 57340, 81310, 105530, 162620, 211060, 495991, 991982, 1983964, 2479955, 4959910, 9919820]

約数ペア:

[(1, 9919820), (2, 4959910), (4, 2479955), (5, 1983964), (10, 991982), (20, 495991), (47, 211060), (61, 162620), (94, 105530), (122, 81310), (173, 57340), (188, 52765), (235, 42212), (244, 40655), (305, 32524), (346, 28670), (470, 21106), (610, 16262), (692, 14335), (865, 11468), (940, 10553), (1220, 8131), (1730, 5734), (2867, 3460)]