201789980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{7243}}^1$

素因数の和:7458

約数の個数: 48

約数和(自身を含む): 486796800

約数和(自身を除く): 285006820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 199, 398, 796, 995, 1393, 1990, 2786, 3980, 5572, 6965, 7243, 13930, 14486, 27860, 28972, 36215, 50701, 72430, 101402, 144860, 202804, 253505, 507010, 1014020, 1441357, 2882714, 5765428, 7206785, 10089499, 14413570, 20178998, 28827140, 40357996, 50447495, 100894990, 201789980]

約数ペア:

[(1, 201789980), (2, 100894990), (4, 50447495), (5, 40357996), (7, 28827140), (10, 20178998), (14, 14413570), (20, 10089499), (28, 7206785), (35, 5765428), (70, 2882714), (140, 1441357), (199, 1014020), (398, 507010), (796, 253505), (995, 202804), (1393, 144860), (1990, 101402), (2786, 72430), (3980, 50701), (5572, 36215), (6965, 28972), (7243, 27860), (13930, 14486)]