19970560

素因数分解:

$2^9\times 5^1\times {\mathrm{29}}^1\times {\mathrm{269}}^1$

素因数の和:321

約数の個数: 80

約数和(自身を含む): 49717800

約数和(自身を除く): 29747240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 64, 80, 116, 128, 145, 160, 232, 256, 269, 290, 320, 464, 512, 538, 580, 640, 928, 1076, 1160, 1280, 1345, 1856, 2152, 2320, 2560, 2690, 3712, 4304, 4640, 5380, 7424, 7801, 8608, 9280, 10760, 14848, 15602, 17216, 18560, 21520, 31204, 34432, 37120, 39005, 43040, 62408, 68864, 74240, 78010, 86080, 124816, 137728, 156020, 172160, 249632, 312040, 344320, 499264, 624080, 688640, 998528, 1248160, 1997056, 2496320, 3994112, 4992640, 9985280, 19970560]

約数ペア:

[(1, 19970560), (2, 9985280), (4, 4992640), (5, 3994112), (8, 2496320), (10, 1997056), (16, 1248160), (20, 998528), (29, 688640), (32, 624080), (40, 499264), (58, 344320), (64, 312040), (80, 249632), (116, 172160), (128, 156020), (145, 137728), (160, 124816), (232, 86080), (256, 78010), (269, 74240), (290, 68864), (320, 62408), (464, 43040), (512, 39005), (538, 37120), (580, 34432), (640, 31204), (928, 21520), (1076, 18560), (1160, 17216), (1280, 15602), (1345, 14848), (1856, 10760), (2152, 9280), (2320, 8608), (2560, 7801), (2690, 7424), (3712, 5380), (4304, 4640)]