21344220

素因数分解:

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

素因数の和:192

約数の個数: 108

約数和(自身を含む): 69025320

約数和(自身を除く): 47681100

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, 380, 395, 474, 570, 684, 711, 790, 855, 948, 1140, 1185, 1422, 1501, 1580, 1710, 2370, 2844, 3002, 3420, 3555, 4503, 4740, 6004, 6241, 7110, 7505, 9006, 12482, 13509, 14220, 15010, 18012, 18723, 22515, 24964, 27018, 30020, 31205, 37446, 45030, 54036, 56169, 62410, 67545, 74892, 90060, 93615, 112338, 118579, 124820, 135090, 187230, 224676, 237158, 270180, 280845, 355737, 374460, 474316, 561690, 592895, 711474, 1067211, 1123380, 1185790, 1422948, 1778685, 2134422, 2371580, 3557370, 4268844, 5336055, 7114740, 10672110, 21344220]

約数ペア:

[(1, 21344220), (2, 10672110), (3, 7114740), (4, 5336055), (5, 4268844), (6, 3557370), (9, 2371580), (10, 2134422), (12, 1778685), (15, 1422948), (18, 1185790), (19, 1123380), (20, 1067211), (30, 711474), (36, 592895), (38, 561690), (45, 474316), (57, 374460), (60, 355737), (76, 280845), (79, 270180), (90, 237158), (95, 224676), (114, 187230), (158, 135090), (171, 124820), (180, 118579), (190, 112338), (228, 93615), (237, 90060), (285, 74892), (316, 67545), (342, 62410), (380, 56169), (395, 54036), (474, 45030), (570, 37446), (684, 31205), (711, 30020), (790, 27018), (855, 24964), (948, 22515), (1140, 18723), (1185, 18012), (1422, 15010), (1501, 14220), (1580, 13509), (1710, 12482), (2370, 9006), (2844, 7505), (3002, 7110), (3420, 6241), (3555, 6004), (4503, 4740)]