21748220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{233}}^1\times {\mathrm{359}}^1$

素因数の和:614

約数の個数: 48

約数和(自身を含む): 49533120

約数和(自身を除く): 27784900

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 233, 260, 359, 466, 718, 932, 1165, 1436, 1795, 2330, 3029, 3590, 4660, 4667, 6058, 7180, 9334, 12116, 15145, 18668, 23335, 30290, 46670, 60580, 83647, 93340, 167294, 334588, 418235, 836470, 1087411, 1672940, 2174822, 4349644, 5437055, 10874110, 21748220]

約数ペア:

[(1, 21748220), (2, 10874110), (4, 5437055), (5, 4349644), (10, 2174822), (13, 1672940), (20, 1087411), (26, 836470), (52, 418235), (65, 334588), (130, 167294), (233, 93340), (260, 83647), (359, 60580), (466, 46670), (718, 30290), (932, 23335), (1165, 18668), (1436, 15145), (1795, 12116), (2330, 9334), (3029, 7180), (3590, 6058), (4660, 4667)]