31871320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61291}}^1$

素因数の和:61315

約数の個数: 32

約数和(自身を含む): 77227920

約数和(自身を除く): 45356600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 61291, 122582, 245164, 306455, 490328, 612910, 796783, 1225820, 1593566, 2451640, 3187132, 3983915, 6374264, 7967830, 15935660, 31871320]

約数ペア:

[(1, 31871320), (2, 15935660), (4, 7967830), (5, 6374264), (8, 3983915), (10, 3187132), (13, 2451640), (20, 1593566), (26, 1225820), (40, 796783), (52, 612910), (65, 490328), (104, 306455), (130, 245164), (260, 122582), (520, 61291)]