19192720

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:224

約数の個数: 80

約数和(自身を含む): 47139840

約数和(自身を除く): 27947120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 71, 80, 109, 124, 142, 155, 218, 248, 284, 310, 355, 436, 496, 545, 568, 620, 710, 872, 1090, 1136, 1240, 1420, 1744, 2180, 2201, 2480, 2840, 3379, 4360, 4402, 5680, 6758, 7739, 8720, 8804, 11005, 13516, 15478, 16895, 17608, 22010, 27032, 30956, 33790, 35216, 38695, 44020, 54064, 61912, 67580, 77390, 88040, 123824, 135160, 154780, 176080, 239909, 270320, 309560, 479818, 619120, 959636, 1199545, 1919272, 2399090, 3838544, 4798180, 9596360, 19192720]

約数ペア:

[(1, 19192720), (2, 9596360), (4, 4798180), (5, 3838544), (8, 2399090), (10, 1919272), (16, 1199545), (20, 959636), (31, 619120), (40, 479818), (62, 309560), (71, 270320), (80, 239909), (109, 176080), (124, 154780), (142, 135160), (155, 123824), (218, 88040), (248, 77390), (284, 67580), (310, 61912), (355, 54064), (436, 44020), (496, 38695), (545, 35216), (568, 33790), (620, 30956), (710, 27032), (872, 22010), (1090, 17608), (1136, 16895), (1240, 15478), (1420, 13516), (1744, 11005), (2180, 8804), (2201, 8720), (2480, 7739), (2840, 6758), (3379, 5680), (4360, 4402)]