16877960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{431}}^1$

素因数の和:542

約数の個数: 64

約数和(自身を含む): 41990400

約数和(自身を除く): 25112440

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 89, 110, 178, 220, 356, 431, 440, 445, 712, 862, 890, 979, 1724, 1780, 1958, 2155, 3448, 3560, 3916, 4310, 4741, 4895, 7832, 8620, 9482, 9790, 17240, 18964, 19580, 23705, 37928, 38359, 39160, 47410, 76718, 94820, 153436, 189640, 191795, 306872, 383590, 421949, 767180, 843898, 1534360, 1687796, 2109745, 3375592, 4219490, 8438980, 16877960]

約数ペア:

[(1, 16877960), (2, 8438980), (4, 4219490), (5, 3375592), (8, 2109745), (10, 1687796), (11, 1534360), (20, 843898), (22, 767180), (40, 421949), (44, 383590), (55, 306872), (88, 191795), (89, 189640), (110, 153436), (178, 94820), (220, 76718), (356, 47410), (431, 39160), (440, 38359), (445, 37928), (712, 23705), (862, 19580), (890, 18964), (979, 17240), (1724, 9790), (1780, 9482), (1958, 8620), (2155, 7832), (3448, 4895), (3560, 4741), (3916, 4310)]