405540180

素因数分解:

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

素因数の和:211

約数の個数: 162

約数和(自身を含む): 1314932346

約数和(自身を除く): 909392166

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, 114, 158, 171, 180, 190, 228, 237, 285, 316, 342, 361, 380, 395, 474, 570, 684, 711, 722, 790, 855, 948, 1083, 1140, 1185, 1422, 1444, 1501, 1580, 1710, 1805, 2166, 2370, 2844, 3002, 3249, 3420, 3555, 3610, 4332, 4503, 4740, 5415, 6004, 6241, 6498, 7110, 7220, 7505, 9006, 10830, 12482, 12996, 13509, 14220, 15010, 16245, 18012, 18723, 21660, 22515, 24964, 27018, 28519, 30020, 31205, 32490, 37446, 45030, 54036, 56169, 57038, 62410, 64980, 67545, 74892, 85557, 90060, 93615, 112338, 114076, 118579, 124820, 135090, 142595, 171114, 187230, 224676, 237158, 256671, 270180, 280845, 285190, 342228, 355737, 374460, 427785, 474316, 513342, 561690, 570380, 592895, 711474, 855570, 1026684, 1067211, 1123380, 1185790, 1283355, 1422948, 1711140, 1778685, 2134422, 2253001, 2371580, 2566710, 3557370, 4268844, 4506002, 5133420, 5336055, 6759003, 7114740, 9012004, 10672110, 11265005, 13518006, 20277009, 21344220, 22530010, 27036012, 33795015, 40554018, 45060020, 67590030, 81108036, 101385045, 135180060, 202770090, 405540180]

約数ペア:

[(1, 405540180), (2, 202770090), (3, 135180060), (4, 101385045), (5, 81108036), (6, 67590030), (9, 45060020), (10, 40554018), (12, 33795015), (15, 27036012), (18, 22530010), (19, 21344220), (20, 20277009), (30, 13518006), (36, 11265005), (38, 10672110), (45, 9012004), (57, 7114740), (60, 6759003), (76, 5336055), (79, 5133420), (90, 4506002), (95, 4268844), (114, 3557370), (158, 2566710), (171, 2371580), (180, 2253001), (190, 2134422), (228, 1778685), (237, 1711140), (285, 1422948), (316, 1283355), (342, 1185790), (361, 1123380), (380, 1067211), (395, 1026684), (474, 855570), (570, 711474), (684, 592895), (711, 570380), (722, 561690), (790, 513342), (855, 474316), (948, 427785), (1083, 374460), (1140, 355737), (1185, 342228), (1422, 285190), (1444, 280845), (1501, 270180), (1580, 256671), (1710, 237158), (1805, 224676), (2166, 187230), (2370, 171114), (2844, 142595), (3002, 135090), (3249, 124820), (3420, 118579), (3555, 114076), (3610, 112338), (4332, 93615), (4503, 90060), (4740, 85557), (5415, 74892), (6004, 67545), (6241, 64980), (6498, 62410), (7110, 57038), (7220, 56169), (7505, 54036), (9006, 45030), (10830, 37446), (12482, 32490), (12996, 31205), (13509, 30020), (14220, 28519), (15010, 27018), (16245, 24964), (18012, 22515), (18723, 21660)]