20355825

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{191}}^1$

素因数の和:247

約数の個数: 72

約数和(自身を含む): 40711680

約数和(自身を除く): 20355855

約数列:

[1, 3, 5, 7, 15, 21, 25, 29, 35, 49, 75, 87, 105, 145, 147, 175, 191, 203, 245, 435, 525, 573, 609, 725, 735, 955, 1015, 1225, 1337, 1421, 2175, 2865, 3045, 3675, 4011, 4263, 4775, 5075, 5539, 6685, 7105, 9359, 14325, 15225, 16617, 20055, 21315, 27695, 28077, 33425, 35525, 38773, 46795, 83085, 100275, 106575, 116319, 138475, 140385, 193865, 233975, 271411, 415425, 581595, 701925, 814233, 969325, 1357055, 2907975, 4071165, 6785275, 20355825]

約数ペア:

[(1, 20355825), (3, 6785275), (5, 4071165), (7, 2907975), (15, 1357055), (21, 969325), (25, 814233), (29, 701925), (35, 581595), (49, 415425), (75, 271411), (87, 233975), (105, 193865), (145, 140385), (147, 138475), (175, 116319), (191, 106575), (203, 100275), (245, 83085), (435, 46795), (525, 38773), (573, 35525), (609, 33425), (725, 28077), (735, 27695), (955, 21315), (1015, 20055), (1225, 16617), (1337, 15225), (1421, 14325), (2175, 9359), (2865, 7105), (3045, 6685), (3675, 5539), (4011, 5075), (4263, 4775)]