20976345

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1559}}^1$

素因数の和:1606

約数の個数: 48

約数和(自身を含む): 40884480

約数和(自身を除く): 19908135

約数列:

[1, 3, 5, 9, 13, 15, 23, 39, 45, 65, 69, 115, 117, 195, 207, 299, 345, 585, 897, 1035, 1495, 1559, 2691, 4485, 4677, 7795, 13455, 14031, 20267, 23385, 35857, 60801, 70155, 101335, 107571, 179285, 182403, 304005, 322713, 466141, 537855, 912015, 1398423, 1613565, 2330705, 4195269, 6992115, 20976345]

約数ペア:

[(1, 20976345), (3, 6992115), (5, 4195269), (9, 2330705), (13, 1613565), (15, 1398423), (23, 912015), (39, 537855), (45, 466141), (65, 322713), (69, 304005), (115, 182403), (117, 179285), (195, 107571), (207, 101335), (299, 70155), (345, 60801), (585, 35857), (897, 23385), (1035, 20267), (1495, 14031), (1559, 13455), (2691, 7795), (4485, 4677)]