15888740

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{523}}^1$

素因数の和:577

約数の個数: 72

約数和(自身を含む): 40142592

約数和(自身を除く): 24253852

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 49, 62, 70, 98, 124, 140, 155, 196, 217, 245, 310, 434, 490, 523, 620, 868, 980, 1046, 1085, 1519, 2092, 2170, 2615, 3038, 3661, 4340, 5230, 6076, 7322, 7595, 10460, 14644, 15190, 16213, 18305, 25627, 30380, 32426, 36610, 51254, 64852, 73220, 81065, 102508, 113491, 128135, 162130, 226982, 256270, 324260, 453964, 512540, 567455, 794437, 1134910, 1588874, 2269820, 3177748, 3972185, 7944370, 15888740]

約数ペア:

[(1, 15888740), (2, 7944370), (4, 3972185), (5, 3177748), (7, 2269820), (10, 1588874), (14, 1134910), (20, 794437), (28, 567455), (31, 512540), (35, 453964), (49, 324260), (62, 256270), (70, 226982), (98, 162130), (124, 128135), (140, 113491), (155, 102508), (196, 81065), (217, 73220), (245, 64852), (310, 51254), (434, 36610), (490, 32426), (523, 30380), (620, 25627), (868, 18305), (980, 16213), (1046, 15190), (1085, 14644), (1519, 10460), (2092, 7595), (2170, 7322), (2615, 6076), (3038, 5230), (3661, 4340)]