20319520

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9769}}^1$

素因数の和:9797

約数の個数: 48

約数和(自身を含む): 51702840

約数和(自身を除く): 31383320

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 9769, 19538, 39076, 48845, 78152, 97690, 126997, 156304, 195380, 253994, 312608, 390760, 507988, 634985, 781520, 1015976, 1269970, 1563040, 2031952, 2539940, 4063904, 5079880, 10159760, 20319520]

約数ペア:

[(1, 20319520), (2, 10159760), (4, 5079880), (5, 4063904), (8, 2539940), (10, 2031952), (13, 1563040), (16, 1269970), (20, 1015976), (26, 781520), (32, 634985), (40, 507988), (52, 390760), (65, 312608), (80, 253994), (104, 195380), (130, 156304), (160, 126997), (208, 97690), (260, 78152), (416, 48845), (520, 39076), (1040, 19538), (2080, 9769)]