27990640

素因数分解:

$2^4\times 5^1\times {\mathrm{439}}^1\times {\mathrm{797}}^1$

素因数の和:1249

約数の個数: 40

約数和(自身を含む): 65308320

約数和(自身を除く): 37317680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 439, 797, 878, 1594, 1756, 2195, 3188, 3512, 3985, 4390, 6376, 7024, 7970, 8780, 12752, 15940, 17560, 31880, 35120, 63760, 349883, 699766, 1399532, 1749415, 2799064, 3498830, 5598128, 6997660, 13995320, 27990640]

約数ペア:

[(1, 27990640), (2, 13995320), (4, 6997660), (5, 5598128), (8, 3498830), (10, 2799064), (16, 1749415), (20, 1399532), (40, 699766), (80, 349883), (439, 63760), (797, 35120), (878, 31880), (1594, 17560), (1756, 15940), (2195, 12752), (3188, 8780), (3512, 7970), (3985, 7024), (4390, 6376)]