207821560

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{397}}^1\times {\mathrm{569}}^1$

素因数の和:1000

約数の個数: 64

約数和(自身を含む): 490017600

約数和(自身を除く): 282196040

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 397, 460, 569, 794, 920, 1138, 1588, 1985, 2276, 2845, 3176, 3970, 4552, 5690, 7940, 9131, 11380, 13087, 15880, 18262, 22760, 26174, 36524, 45655, 52348, 65435, 73048, 91310, 104696, 130870, 182620, 225893, 261740, 365240, 451786, 523480, 903572, 1129465, 1807144, 2258930, 4517860, 5195539, 9035720, 10391078, 20782156, 25977695, 41564312, 51955390, 103910780, 207821560]

約数ペア:

[(1, 207821560), (2, 103910780), (4, 51955390), (5, 41564312), (8, 25977695), (10, 20782156), (20, 10391078), (23, 9035720), (40, 5195539), (46, 4517860), (92, 2258930), (115, 1807144), (184, 1129465), (230, 903572), (397, 523480), (460, 451786), (569, 365240), (794, 261740), (920, 225893), (1138, 182620), (1588, 130870), (1985, 104696), (2276, 91310), (2845, 73048), (3176, 65435), (3970, 52348), (4552, 45655), (5690, 36524), (7940, 26174), (9131, 22760), (11380, 18262), (13087, 15880)]