2100020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{197}}^1$

素因数の和:260

約数の個数: 48

約数和(自身を含む): 4889808

約数和(自身を除く): 2789788

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 41, 52, 65, 82, 130, 164, 197, 205, 260, 394, 410, 533, 788, 820, 985, 1066, 1970, 2132, 2561, 2665, 3940, 5122, 5330, 8077, 10244, 10660, 12805, 16154, 25610, 32308, 40385, 51220, 80770, 105001, 161540, 210002, 420004, 525005, 1050010, 2100020]

約数ペア:

[(1, 2100020), (2, 1050010), (4, 525005), (5, 420004), (10, 210002), (13, 161540), (20, 105001), (26, 80770), (41, 51220), (52, 40385), (65, 32308), (82, 25610), (130, 16154), (164, 12805), (197, 10660), (205, 10244), (260, 8077), (394, 5330), (410, 5122), (533, 3940), (788, 2665), (820, 2561), (985, 2132), (1066, 1970)]