20006620

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{163}}^1$

素因数の和:227

約数の個数: 72

約数和(自身を含む): 47237904

約数和(自身を除く): 27231284

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 163, 170, 190, 323, 326, 340, 361, 380, 646, 652, 722, 815, 1292, 1444, 1615, 1630, 1805, 2771, 3097, 3230, 3260, 3610, 5542, 6137, 6194, 6460, 7220, 11084, 12274, 12388, 13855, 15485, 24548, 27710, 30685, 30970, 52649, 55420, 58843, 61370, 61940, 105298, 117686, 122740, 210596, 235372, 263245, 294215, 526490, 588430, 1000331, 1052980, 1176860, 2000662, 4001324, 5001655, 10003310, 20006620]

約数ペア:

[(1, 20006620), (2, 10003310), (4, 5001655), (5, 4001324), (10, 2000662), (17, 1176860), (19, 1052980), (20, 1000331), (34, 588430), (38, 526490), (68, 294215), (76, 263245), (85, 235372), (95, 210596), (163, 122740), (170, 117686), (190, 105298), (323, 61940), (326, 61370), (340, 58843), (361, 55420), (380, 52649), (646, 30970), (652, 30685), (722, 27710), (815, 24548), (1292, 15485), (1444, 13855), (1615, 12388), (1630, 12274), (1805, 11084), (2771, 7220), (3097, 6460), (3230, 6194), (3260, 6137), (3610, 5542)]