201798980

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{251}}^1\times {\mathrm{659}}^1$

素因数の和:980

約数の個数: 48

約数和(自身を含む): 433097280

約数和(自身を除く): 231298300

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 251, 305, 502, 610, 659, 1004, 1220, 1255, 1318, 2510, 2636, 3295, 5020, 6590, 13180, 15311, 30622, 40199, 61244, 76555, 80398, 153110, 160796, 165409, 200995, 306220, 330818, 401990, 661636, 803980, 827045, 1654090, 3308180, 10089949, 20179898, 40359796, 50449745, 100899490, 201798980]

約数ペア:

[(1, 201798980), (2, 100899490), (4, 50449745), (5, 40359796), (10, 20179898), (20, 10089949), (61, 3308180), (122, 1654090), (244, 827045), (251, 803980), (305, 661636), (502, 401990), (610, 330818), (659, 306220), (1004, 200995), (1220, 165409), (1255, 160796), (1318, 153110), (2510, 80398), (2636, 76555), (3295, 61244), (5020, 40199), (6590, 30622), (13180, 15311)]