20656620

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{311}}^1$

素因数の和:373

約数の個数: 120

約数和(自身を含む): 66594528

約数和(自身を除く): 45937908

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 41, 45, 54, 60, 81, 82, 90, 108, 123, 135, 162, 164, 180, 205, 246, 270, 311, 324, 369, 405, 410, 492, 540, 615, 622, 738, 810, 820, 933, 1107, 1230, 1244, 1476, 1555, 1620, 1845, 1866, 2214, 2460, 2799, 3110, 3321, 3690, 3732, 4428, 4665, 5535, 5598, 6220, 6642, 7380, 8397, 9330, 11070, 11196, 12751, 13284, 13995, 16605, 16794, 18660, 22140, 25191, 25502, 27990, 33210, 33588, 38253, 41985, 50382, 51004, 55980, 63755, 66420, 76506, 83970, 100764, 114759, 125955, 127510, 153012, 167940, 191265, 229518, 251910, 255020, 344277, 382530, 459036, 503820, 573795, 688554, 765060, 1032831, 1147590, 1377108, 1721385, 2065662, 2295180, 3442770, 4131324, 5164155, 6885540, 10328310, 20656620]

約数ペア:

[(1, 20656620), (2, 10328310), (3, 6885540), (4, 5164155), (5, 4131324), (6, 3442770), (9, 2295180), (10, 2065662), (12, 1721385), (15, 1377108), (18, 1147590), (20, 1032831), (27, 765060), (30, 688554), (36, 573795), (41, 503820), (45, 459036), (54, 382530), (60, 344277), (81, 255020), (82, 251910), (90, 229518), (108, 191265), (123, 167940), (135, 153012), (162, 127510), (164, 125955), (180, 114759), (205, 100764), (246, 83970), (270, 76506), (311, 66420), (324, 63755), (369, 55980), (405, 51004), (410, 50382), (492, 41985), (540, 38253), (615, 33588), (622, 33210), (738, 27990), (810, 25502), (820, 25191), (933, 22140), (1107, 18660), (1230, 16794), (1244, 16605), (1476, 13995), (1555, 13284), (1620, 12751), (1845, 11196), (1866, 11070), (2214, 9330), (2460, 8397), (2799, 7380), (3110, 6642), (3321, 6220), (3690, 5598), (3732, 5535), (4428, 4665)]