18645940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{317}}^1$

素因数の和:516

約数の個数: 48

約数和(自身を含む): 41830992

約数和(自身を除く): 23185052

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 173, 317, 340, 346, 634, 692, 865, 1268, 1585, 1730, 2941, 3170, 3460, 5389, 5882, 6340, 10778, 11764, 14705, 21556, 26945, 29410, 53890, 54841, 58820, 107780, 109682, 219364, 274205, 548410, 932297, 1096820, 1864594, 3729188, 4661485, 9322970, 18645940]

約数ペア:

[(1, 18645940), (2, 9322970), (4, 4661485), (5, 3729188), (10, 1864594), (17, 1096820), (20, 932297), (34, 548410), (68, 274205), (85, 219364), (170, 109682), (173, 107780), (317, 58820), (340, 54841), (346, 53890), (634, 29410), (692, 26945), (865, 21556), (1268, 14705), (1585, 11764), (1730, 10778), (2941, 6340), (3170, 5882), (3460, 5389)]