12855140

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{257}}^1$

素因数の和:368

約数の個数: 48

約数和(自身を含む): 28216944

約数和(自身を除く): 15361804

約数列:

[1, 2, 4, 5, 10, 20, 41, 61, 82, 122, 164, 205, 244, 257, 305, 410, 514, 610, 820, 1028, 1220, 1285, 2501, 2570, 5002, 5140, 10004, 10537, 12505, 15677, 21074, 25010, 31354, 42148, 50020, 52685, 62708, 78385, 105370, 156770, 210740, 313540, 642757, 1285514, 2571028, 3213785, 6427570, 12855140]

約数ペア:

[(1, 12855140), (2, 6427570), (4, 3213785), (5, 2571028), (10, 1285514), (20, 642757), (41, 313540), (61, 210740), (82, 156770), (122, 105370), (164, 78385), (205, 62708), (244, 52685), (257, 50020), (305, 42148), (410, 31354), (514, 25010), (610, 21074), (820, 15677), (1028, 12505), (1220, 10537), (1285, 10004), (2501, 5140), (2570, 5002)]