19786480

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{397}}^1$

素因数の和:506

約数の個数: 80

約数和(自身を含む): 53300160

約数和(自身を除く): 33513680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 89, 112, 140, 178, 280, 356, 397, 445, 560, 623, 712, 794, 890, 1246, 1424, 1588, 1780, 1985, 2492, 2779, 3115, 3176, 3560, 3970, 4984, 5558, 6230, 6352, 7120, 7940, 9968, 11116, 12460, 13895, 15880, 22232, 24920, 27790, 31760, 35333, 44464, 49840, 55580, 70666, 111160, 141332, 176665, 222320, 247331, 282664, 353330, 494662, 565328, 706660, 989324, 1236655, 1413320, 1978648, 2473310, 2826640, 3957296, 4946620, 9893240, 19786480]

約数ペア:

[(1, 19786480), (2, 9893240), (4, 4946620), (5, 3957296), (7, 2826640), (8, 2473310), (10, 1978648), (14, 1413320), (16, 1236655), (20, 989324), (28, 706660), (35, 565328), (40, 494662), (56, 353330), (70, 282664), (80, 247331), (89, 222320), (112, 176665), (140, 141332), (178, 111160), (280, 70666), (356, 55580), (397, 49840), (445, 44464), (560, 35333), (623, 31760), (712, 27790), (794, 24920), (890, 22232), (1246, 15880), (1424, 13895), (1588, 12460), (1780, 11116), (1985, 9968), (2492, 7940), (2779, 7120), (3115, 6352), (3176, 6230), (3560, 5558), (3970, 4984)]