201997739980

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^2\times {\mathrm{199}}^1\times {\mathrm{27449}}^1$

素因数の和:27743

約数の個数: 72

約数和(自身を含む): 436487940000

約数和(自身を除く): 234490200020

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 199, 215, 398, 430, 796, 860, 995, 1849, 1990, 3698, 3980, 7396, 8557, 9245, 17114, 18490, 27449, 34228, 36980, 42785, 54898, 85570, 109796, 137245, 171140, 274490, 367951, 548980, 735902, 1180307, 1471804, 1839755, 2360614, 3679510, 4721228, 5462351, 5901535, 7359020, 10924702, 11803070, 21849404, 23606140, 27311755, 50753201, 54623510, 101506402, 109247020, 203012804, 234881093, 253766005, 469762186, 507532010, 939524372, 1015064020, 1174405465, 2348810930, 4697621860, 10099886999, 20199773998, 40399547996, 50499434995, 100998869990, 201997739980]

約数ペア:

[(1, 201997739980), (2, 100998869990), (4, 50499434995), (5, 40399547996), (10, 20199773998), (20, 10099886999), (43, 4697621860), (86, 2348810930), (172, 1174405465), (199, 1015064020), (215, 939524372), (398, 507532010), (430, 469762186), (796, 253766005), (860, 234881093), (995, 203012804), (1849, 109247020), (1990, 101506402), (3698, 54623510), (3980, 50753201), (7396, 27311755), (8557, 23606140), (9245, 21849404), (17114, 11803070), (18490, 10924702), (27449, 7359020), (34228, 5901535), (36980, 5462351), (42785, 4721228), (54898, 3679510), (85570, 2360614), (109796, 1839755), (137245, 1471804), (171140, 1180307), (274490, 735902), (367951, 548980)]