21374860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{359}}^1$

素因数の和:610

約数の個数: 48

約数和(自身を含む): 48686400

約数和(自身を除く): 27311540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 229, 260, 359, 458, 718, 916, 1145, 1436, 1795, 2290, 2977, 3590, 4580, 4667, 5954, 7180, 9334, 11908, 14885, 18668, 23335, 29770, 46670, 59540, 82211, 93340, 164422, 328844, 411055, 822110, 1068743, 1644220, 2137486, 4274972, 5343715, 10687430, 21374860]

約数ペア:

[(1, 21374860), (2, 10687430), (4, 5343715), (5, 4274972), (10, 2137486), (13, 1644220), (20, 1068743), (26, 822110), (52, 411055), (65, 328844), (130, 164422), (229, 93340), (260, 82211), (359, 59540), (458, 46670), (718, 29770), (916, 23335), (1145, 18668), (1436, 14885), (1795, 11908), (2290, 9334), (2977, 7180), (3590, 5954), (4580, 4667)]