28909260

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{107}}^1$

素因数の和:220

約数の個数: 144

約数和(自身を含む): 94348800

約数和(自身を除く): 65439540

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 79, 90, 95, 107, 114, 158, 171, 180, 190, 214, 228, 237, 285, 316, 321, 342, 380, 395, 428, 474, 535, 570, 642, 684, 711, 790, 855, 948, 963, 1070, 1140, 1185, 1284, 1422, 1501, 1580, 1605, 1710, 1926, 2033, 2140, 2370, 2844, 3002, 3210, 3420, 3555, 3852, 4066, 4503, 4740, 4815, 6004, 6099, 6420, 7110, 7505, 8132, 8453, 9006, 9630, 10165, 12198, 13509, 14220, 15010, 16906, 18012, 18297, 19260, 20330, 22515, 24396, 25359, 27018, 30020, 30495, 33812, 36594, 40660, 42265, 45030, 50718, 54036, 60990, 67545, 73188, 76077, 84530, 90060, 91485, 101436, 121980, 126795, 135090, 152154, 160607, 169060, 182970, 253590, 270180, 304308, 321214, 365940, 380385, 481821, 507180, 642428, 760770, 803035, 963642, 1445463, 1521540, 1606070, 1927284, 2409105, 2890926, 3212140, 4818210, 5781852, 7227315, 9636420, 14454630, 28909260]

約数ペア:

[(1, 28909260), (2, 14454630), (3, 9636420), (4, 7227315), (5, 5781852), (6, 4818210), (9, 3212140), (10, 2890926), (12, 2409105), (15, 1927284), (18, 1606070), (19, 1521540), (20, 1445463), (30, 963642), (36, 803035), (38, 760770), (45, 642428), (57, 507180), (60, 481821), (76, 380385), (79, 365940), (90, 321214), (95, 304308), (107, 270180), (114, 253590), (158, 182970), (171, 169060), (180, 160607), (190, 152154), (214, 135090), (228, 126795), (237, 121980), (285, 101436), (316, 91485), (321, 90060), (342, 84530), (380, 76077), (395, 73188), (428, 67545), (474, 60990), (535, 54036), (570, 50718), (642, 45030), (684, 42265), (711, 40660), (790, 36594), (855, 33812), (948, 30495), (963, 30020), (1070, 27018), (1140, 25359), (1185, 24396), (1284, 22515), (1422, 20330), (1501, 19260), (1580, 18297), (1605, 18012), (1710, 16906), (1926, 15010), (2033, 14220), (2140, 13509), (2370, 12198), (2844, 10165), (3002, 9630), (3210, 9006), (3420, 8453), (3555, 8132), (3852, 7505), (4066, 7110), (4503, 6420), (4740, 6099), (4815, 6004)]