55221980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{1201}}^1$

素因数の和:1251

約数の個数: 72

約数和(自身を含む): 134287440

約数和(自身を除く): 79065460

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 121, 190, 209, 220, 242, 380, 418, 484, 605, 836, 1045, 1201, 1210, 2090, 2299, 2402, 2420, 4180, 4598, 4804, 6005, 9196, 11495, 12010, 13211, 22819, 22990, 24020, 26422, 45638, 45980, 52844, 66055, 91276, 114095, 132110, 145321, 228190, 251009, 264220, 290642, 456380, 502018, 581284, 726605, 1004036, 1255045, 1453210, 2510090, 2761099, 2906420, 5020180, 5522198, 11044396, 13805495, 27610990, 55221980]

約数ペア:

[(1, 55221980), (2, 27610990), (4, 13805495), (5, 11044396), (10, 5522198), (11, 5020180), (19, 2906420), (20, 2761099), (22, 2510090), (38, 1453210), (44, 1255045), (55, 1004036), (76, 726605), (95, 581284), (110, 502018), (121, 456380), (190, 290642), (209, 264220), (220, 251009), (242, 228190), (380, 145321), (418, 132110), (484, 114095), (605, 91276), (836, 66055), (1045, 52844), (1201, 45980), (1210, 45638), (2090, 26422), (2299, 24020), (2402, 22990), (2420, 22819), (4180, 13211), (4598, 12010), (4804, 11495), (6005, 9196)]