81604620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{223}}^1$

素因数の和:364

約数の個数: 144

約数和(自身を含む): 264176640

約数和(自身を除く): 182572020

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 107, 114, 171, 180, 190, 214, 223, 228, 285, 321, 342, 380, 428, 446, 535, 570, 642, 669, 684, 855, 892, 963, 1070, 1115, 1140, 1284, 1338, 1605, 1710, 1926, 2007, 2033, 2140, 2230, 2676, 3210, 3345, 3420, 3852, 4014, 4066, 4237, 4460, 4815, 6099, 6420, 6690, 8028, 8132, 8474, 9630, 10035, 10165, 12198, 12711, 13380, 16948, 18297, 19260, 20070, 20330, 21185, 23861, 24396, 25422, 30495, 36594, 38133, 40140, 40660, 42370, 47722, 50844, 60990, 63555, 71583, 73188, 76266, 84740, 91485, 95444, 119305, 121980, 127110, 143166, 152532, 182970, 190665, 214749, 238610, 254220, 286332, 357915, 365940, 381330, 429498, 453359, 477220, 715830, 762660, 858996, 906718, 1073745, 1360077, 1431660, 1813436, 2147490, 2266795, 2720154, 4080231, 4294980, 4533590, 5440308, 6800385, 8160462, 9067180, 13600770, 16320924, 20401155, 27201540, 40802310, 81604620]

約数ペア:

[(1, 81604620), (2, 40802310), (3, 27201540), (4, 20401155), (5, 16320924), (6, 13600770), (9, 9067180), (10, 8160462), (12, 6800385), (15, 5440308), (18, 4533590), (19, 4294980), (20, 4080231), (30, 2720154), (36, 2266795), (38, 2147490), (45, 1813436), (57, 1431660), (60, 1360077), (76, 1073745), (90, 906718), (95, 858996), (107, 762660), (114, 715830), (171, 477220), (180, 453359), (190, 429498), (214, 381330), (223, 365940), (228, 357915), (285, 286332), (321, 254220), (342, 238610), (380, 214749), (428, 190665), (446, 182970), (535, 152532), (570, 143166), (642, 127110), (669, 121980), (684, 119305), (855, 95444), (892, 91485), (963, 84740), (1070, 76266), (1115, 73188), (1140, 71583), (1284, 63555), (1338, 60990), (1605, 50844), (1710, 47722), (1926, 42370), (2007, 40660), (2033, 40140), (2140, 38133), (2230, 36594), (2676, 30495), (3210, 25422), (3345, 24396), (3420, 23861), (3852, 21185), (4014, 20330), (4066, 20070), (4237, 19260), (4460, 18297), (4815, 16948), (6099, 13380), (6420, 12711), (6690, 12198), (8028, 10165), (8132, 10035), (8474, 9630)]