19977100

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{127}}^1$

素因数の和:176

約数の個数: 108

約数和(自身を含む): 51718912

約数和(自身を除く): 31741812

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 25, 26, 44, 50, 52, 55, 65, 100, 110, 121, 127, 130, 143, 220, 242, 254, 260, 275, 286, 325, 484, 508, 550, 572, 605, 635, 650, 715, 1100, 1210, 1270, 1300, 1397, 1430, 1573, 1651, 2420, 2540, 2794, 2860, 3025, 3146, 3175, 3302, 3575, 5588, 6050, 6292, 6350, 6604, 6985, 7150, 7865, 8255, 12100, 12700, 13970, 14300, 15367, 15730, 16510, 18161, 27940, 30734, 31460, 33020, 34925, 36322, 39325, 41275, 61468, 69850, 72644, 76835, 78650, 82550, 90805, 139700, 153670, 157300, 165100, 181610, 199771, 307340, 363220, 384175, 399542, 454025, 768350, 799084, 908050, 998855, 1536700, 1816100, 1997710, 3995420, 4994275, 9988550, 19977100]

約数ペア:

[(1, 19977100), (2, 9988550), (4, 4994275), (5, 3995420), (10, 1997710), (11, 1816100), (13, 1536700), (20, 998855), (22, 908050), (25, 799084), (26, 768350), (44, 454025), (50, 399542), (52, 384175), (55, 363220), (65, 307340), (100, 199771), (110, 181610), (121, 165100), (127, 157300), (130, 153670), (143, 139700), (220, 90805), (242, 82550), (254, 78650), (260, 76835), (275, 72644), (286, 69850), (325, 61468), (484, 41275), (508, 39325), (550, 36322), (572, 34925), (605, 33020), (635, 31460), (650, 30734), (715, 27940), (1100, 18161), (1210, 16510), (1270, 15730), (1300, 15367), (1397, 14300), (1430, 13970), (1573, 12700), (1651, 12100), (2420, 8255), (2540, 7865), (2794, 7150), (2860, 6985), (3025, 6604), (3146, 6350), (3175, 6292), (3302, 6050), (3575, 5588)]