21921540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{2789}}^1$

素因数の和:2932

約数の個数: 48

約数和(自身を含む): 61871040

約数和(自身を除く): 39949500

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 131, 262, 393, 524, 655, 786, 1310, 1572, 1965, 2620, 2789, 3930, 5578, 7860, 8367, 11156, 13945, 16734, 27890, 33468, 41835, 55780, 83670, 167340, 365359, 730718, 1096077, 1461436, 1826795, 2192154, 3653590, 4384308, 5480385, 7307180, 10960770, 21921540]

約数ペア:

[(1, 21921540), (2, 10960770), (3, 7307180), (4, 5480385), (5, 4384308), (6, 3653590), (10, 2192154), (12, 1826795), (15, 1461436), (20, 1096077), (30, 730718), (60, 365359), (131, 167340), (262, 83670), (393, 55780), (524, 41835), (655, 33468), (786, 27890), (1310, 16734), (1572, 13945), (1965, 11156), (2620, 8367), (2789, 7860), (3930, 5578)]