1971292015

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{331}}^1\times {\mathrm{499}}^1$

素因数の和:884

約数の個数: 64

約数和(自身を含む): 3059712000

約数和(自身を除く): 1088419985

約数列:

[1, 5, 7, 11, 31, 35, 55, 77, 155, 217, 331, 341, 385, 499, 1085, 1655, 1705, 2317, 2387, 2495, 3493, 3641, 5489, 10261, 11585, 11935, 15469, 17465, 18205, 25487, 27445, 38423, 51305, 71827, 77345, 108283, 112871, 127435, 165169, 170159, 192115, 359135, 541415, 564355, 790097, 825845, 850795, 1156183, 1191113, 1816859, 3950485, 5120239, 5780915, 5955565, 9084295, 12718013, 25601195, 35841673, 56322629, 63590065, 179208365, 281613145, 394258403, 1971292015]

約数ペア:

[(1, 1971292015), (5, 394258403), (7, 281613145), (11, 179208365), (31, 63590065), (35, 56322629), (55, 35841673), (77, 25601195), (155, 12718013), (217, 9084295), (331, 5955565), (341, 5780915), (385, 5120239), (499, 3950485), (1085, 1816859), (1655, 1191113), (1705, 1156183), (2317, 850795), (2387, 825845), (2495, 790097), (3493, 564355), (3641, 541415), (5489, 359135), (10261, 192115), (11585, 170159), (11935, 165169), (15469, 127435), (17465, 112871), (18205, 108283), (25487, 77345), (27445, 71827), (38423, 51305)]