17918320

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{653}}^1$

素因数の和:687

約数の個数: 80

約数和(自身を含む): 48657600

約数和(自身を除く): 30739280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 343, 392, 490, 560, 653, 686, 784, 980, 1306, 1372, 1715, 1960, 2612, 2744, 3265, 3430, 3920, 4571, 5224, 5488, 6530, 6860, 9142, 10448, 13060, 13720, 18284, 22855, 26120, 27440, 31997, 36568, 45710, 52240, 63994, 73136, 91420, 127988, 159985, 182840, 223979, 255976, 319970, 365680, 447958, 511952, 639940, 895916, 1119895, 1279880, 1791832, 2239790, 2559760, 3583664, 4479580, 8959160, 17918320]

約数ペア:

[(1, 17918320), (2, 8959160), (4, 4479580), (5, 3583664), (7, 2559760), (8, 2239790), (10, 1791832), (14, 1279880), (16, 1119895), (20, 895916), (28, 639940), (35, 511952), (40, 447958), (49, 365680), (56, 319970), (70, 255976), (80, 223979), (98, 182840), (112, 159985), (140, 127988), (196, 91420), (245, 73136), (280, 63994), (343, 52240), (392, 45710), (490, 36568), (560, 31997), (653, 27440), (686, 26120), (784, 22855), (980, 18284), (1306, 13720), (1372, 13060), (1715, 10448), (1960, 9142), (2612, 6860), (2744, 6530), (3265, 5488), (3430, 5224), (3920, 4571)]