19994010880

素因数分解:

$2^8\times 5^1\times {\mathrm{73}}^1\times {\mathrm{213977}}^1$

素因数の和:214071

約数の個数: 72

約数和(自身を含む): 48548184552

約数和(自身を除く): 28554173672

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 73, 80, 128, 146, 160, 256, 292, 320, 365, 584, 640, 730, 1168, 1280, 1460, 2336, 2920, 4672, 5840, 9344, 11680, 18688, 23360, 46720, 93440, 213977, 427954, 855908, 1069885, 1711816, 2139770, 3423632, 4279540, 6847264, 8559080, 13694528, 15620321, 17118160, 27389056, 31240642, 34236320, 54778112, 62481284, 68472640, 78101605, 124962568, 136945280, 156203210, 249925136, 273890560, 312406420, 499850272, 624812840, 999700544, 1249625680, 1999401088, 2499251360, 3998802176, 4998502720, 9997005440, 19994010880]

約数ペア:

[(1, 19994010880), (2, 9997005440), (4, 4998502720), (5, 3998802176), (8, 2499251360), (10, 1999401088), (16, 1249625680), (20, 999700544), (32, 624812840), (40, 499850272), (64, 312406420), (73, 273890560), (80, 249925136), (128, 156203210), (146, 136945280), (160, 124962568), (256, 78101605), (292, 68472640), (320, 62481284), (365, 54778112), (584, 34236320), (640, 31240642), (730, 27389056), (1168, 17118160), (1280, 15620321), (1460, 13694528), (2336, 8559080), (2920, 6847264), (4672, 4279540), (5840, 3423632), (9344, 2139770), (11680, 1711816), (18688, 1069885), (23360, 855908), (46720, 427954), (93440, 213977)]