2000320139980

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{457}}^1\times {\mathrm{1110931}}^1$

素因数の和:1111594

約数の個数: 48

約数和(自身を含む): 4231237814496

約数和(自身を除く): 2230917674516

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 457, 788, 914, 985, 1828, 1970, 2285, 3940, 4570, 9140, 90029, 180058, 360116, 450145, 900290, 1110931, 1800580, 2221862, 4443724, 5554655, 11109310, 22218620, 218853407, 437706814, 507695467, 875413628, 1015390934, 1094267035, 2030781868, 2188534070, 2538477335, 4377068140, 5076954670, 10153909340, 100016006999, 200032013998, 400064027996, 500080034995, 1000160069990, 2000320139980]

約数ペア:

[(1, 2000320139980), (2, 1000160069990), (4, 500080034995), (5, 400064027996), (10, 200032013998), (20, 100016006999), (197, 10153909340), (394, 5076954670), (457, 4377068140), (788, 2538477335), (914, 2188534070), (985, 2030781868), (1828, 1094267035), (1970, 1015390934), (2285, 875413628), (3940, 507695467), (4570, 437706814), (9140, 218853407), (90029, 22218620), (180058, 11109310), (360116, 5554655), (450145, 4443724), (900290, 2221862), (1110931, 1800580)]