19846420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{59}}^1\times {\mathrm{139}}^1$

素因数の和:229

約数の個数: 72

約数和(自身を含む): 46922400

約数和(自身を除く): 27075980

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 59, 110, 118, 121, 139, 220, 236, 242, 278, 295, 484, 556, 590, 605, 649, 695, 1180, 1210, 1298, 1390, 1529, 2420, 2596, 2780, 3058, 3245, 6116, 6490, 7139, 7645, 8201, 12980, 14278, 15290, 16402, 16819, 28556, 30580, 32804, 33638, 35695, 41005, 67276, 71390, 82010, 84095, 90211, 142780, 164020, 168190, 180422, 336380, 360844, 451055, 902110, 992321, 1804220, 1984642, 3969284, 4961605, 9923210, 19846420]

約数ペア:

[(1, 19846420), (2, 9923210), (4, 4961605), (5, 3969284), (10, 1984642), (11, 1804220), (20, 992321), (22, 902110), (44, 451055), (55, 360844), (59, 336380), (110, 180422), (118, 168190), (121, 164020), (139, 142780), (220, 90211), (236, 84095), (242, 82010), (278, 71390), (295, 67276), (484, 41005), (556, 35695), (590, 33638), (605, 32804), (649, 30580), (695, 28556), (1180, 16819), (1210, 16402), (1298, 15290), (1390, 14278), (1529, 12980), (2420, 8201), (2596, 7645), (2780, 7139), (3058, 6490), (3245, 6116)]