19272880

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^3\times {\mathrm{181}}^1$

素因数の和:227

約数の個数: 80

約数和(自身を含む): 49559328

約数和(自身を除く): 30286448

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 121, 176, 181, 220, 242, 362, 440, 484, 605, 724, 880, 905, 968, 1210, 1331, 1448, 1810, 1936, 1991, 2420, 2662, 2896, 3620, 3982, 4840, 5324, 6655, 7240, 7964, 9680, 9955, 10648, 13310, 14480, 15928, 19910, 21296, 21901, 26620, 31856, 39820, 43802, 53240, 79640, 87604, 106480, 109505, 159280, 175208, 219010, 240911, 350416, 438020, 481822, 876040, 963644, 1204555, 1752080, 1927288, 2409110, 3854576, 4818220, 9636440, 19272880]

約数ペア:

[(1, 19272880), (2, 9636440), (4, 4818220), (5, 3854576), (8, 2409110), (10, 1927288), (11, 1752080), (16, 1204555), (20, 963644), (22, 876040), (40, 481822), (44, 438020), (55, 350416), (80, 240911), (88, 219010), (110, 175208), (121, 159280), (176, 109505), (181, 106480), (220, 87604), (242, 79640), (362, 53240), (440, 43802), (484, 39820), (605, 31856), (724, 26620), (880, 21901), (905, 21296), (968, 19910), (1210, 15928), (1331, 14480), (1448, 13310), (1810, 10648), (1936, 9955), (1991, 9680), (2420, 7964), (2662, 7240), (2896, 6655), (3620, 5324), (3982, 4840)]