18680455880

素因数分解:

$2^3\times 5^1\times {\mathrm{1229}}^1\times {\mathrm{379993}}^1$

素因数の和:381233

約数の個数: 32

約数和(自身を含む): 42065335800

約数和(自身を除く): 23384879920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1229, 2458, 4916, 6145, 9832, 12290, 24580, 49160, 379993, 759986, 1519972, 1899965, 3039944, 3799930, 7599860, 15199720, 467011397, 934022794, 1868045588, 2335056985, 3736091176, 4670113970, 9340227940, 18680455880]

約数ペア:

[(1, 18680455880), (2, 9340227940), (4, 4670113970), (5, 3736091176), (8, 2335056985), (10, 1868045588), (20, 934022794), (40, 467011397), (1229, 15199720), (2458, 7599860), (4916, 3799930), (6145, 3039944), (9832, 1899965), (12290, 1519972), (24580, 759986), (49160, 379993)]