220996980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^3\times {\mathrm{179}}^1$

素因数の和:251

約数の個数: 144

約数和(自身を含む): 711547200

約数和(自身を除く): 490550220

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, 114, 171, 179, 180, 190, 228, 285, 342, 358, 361, 380, 537, 570, 684, 716, 722, 855, 895, 1074, 1083, 1140, 1444, 1611, 1710, 1790, 1805, 2148, 2166, 2685, 3222, 3249, 3401, 3420, 3580, 3610, 4332, 5370, 5415, 6444, 6498, 6802, 6859, 7220, 8055, 10203, 10740, 10830, 12996, 13604, 13718, 16110, 16245, 17005, 20406, 20577, 21660, 27436, 30609, 32220, 32490, 34010, 34295, 40812, 41154, 51015, 61218, 61731, 64619, 64980, 68020, 68590, 82308, 102030, 102885, 122436, 123462, 129238, 137180, 153045, 193857, 204060, 205770, 246924, 258476, 306090, 308655, 323095, 387714, 411540, 581571, 612180, 617310, 646190, 775428, 969285, 1163142, 1227761, 1234620, 1292380, 1938570, 2326284, 2455522, 2907855, 3683283, 3877140, 4911044, 5815710, 6138805, 7366566, 11049849, 11631420, 12277610, 14733132, 18416415, 22099698, 24555220, 36832830, 44199396, 55249245, 73665660, 110498490, 220996980]

約数ペア:

[(1, 220996980), (2, 110498490), (3, 73665660), (4, 55249245), (5, 44199396), (6, 36832830), (9, 24555220), (10, 22099698), (12, 18416415), (15, 14733132), (18, 12277610), (19, 11631420), (20, 11049849), (30, 7366566), (36, 6138805), (38, 5815710), (45, 4911044), (57, 3877140), (60, 3683283), (76, 2907855), (90, 2455522), (95, 2326284), (114, 1938570), (171, 1292380), (179, 1234620), (180, 1227761), (190, 1163142), (228, 969285), (285, 775428), (342, 646190), (358, 617310), (361, 612180), (380, 581571), (537, 411540), (570, 387714), (684, 323095), (716, 308655), (722, 306090), (855, 258476), (895, 246924), (1074, 205770), (1083, 204060), (1140, 193857), (1444, 153045), (1611, 137180), (1710, 129238), (1790, 123462), (1805, 122436), (2148, 102885), (2166, 102030), (2685, 82308), (3222, 68590), (3249, 68020), (3401, 64980), (3420, 64619), (3580, 61731), (3610, 61218), (4332, 51015), (5370, 41154), (5415, 40812), (6444, 34295), (6498, 34010), (6802, 32490), (6859, 32220), (7220, 30609), (8055, 27436), (10203, 21660), (10740, 20577), (10830, 20406), (12996, 17005), (13604, 16245), (13718, 16110)]