21959840

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{2801}}^1$

素因数の和:2830

約数の個数: 72

約数和(自身を含む): 60371892

約数和(自身を除く): 38412052

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 2801, 3920, 5602, 7840, 11204, 14005, 19607, 22408, 28010, 39214, 44816, 56020, 78428, 89632, 98035, 112040, 137249, 156856, 196070, 224080, 274498, 313712, 392140, 448160, 548996, 627424, 686245, 784280, 1097992, 1372490, 1568560, 2195984, 2744980, 3137120, 4391968, 5489960, 10979920, 21959840]

約数ペア:

[(1, 21959840), (2, 10979920), (4, 5489960), (5, 4391968), (7, 3137120), (8, 2744980), (10, 2195984), (14, 1568560), (16, 1372490), (20, 1097992), (28, 784280), (32, 686245), (35, 627424), (40, 548996), (49, 448160), (56, 392140), (70, 313712), (80, 274498), (98, 224080), (112, 196070), (140, 156856), (160, 137249), (196, 112040), (224, 98035), (245, 89632), (280, 78428), (392, 56020), (490, 44816), (560, 39214), (784, 28010), (980, 22408), (1120, 19607), (1568, 14005), (1960, 11204), (2801, 7840), (3920, 5602)]