19763380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{10859}}^1$

素因数の和:10888

約数の個数: 48

約数和(自身を含む): 51085440

約数和(自身を除く): 31322060

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 10859, 21718, 43436, 54295, 76013, 108590, 141167, 152026, 217180, 282334, 304052, 380065, 564668, 705835, 760130, 988169, 1411670, 1520260, 1976338, 2823340, 3952676, 4940845, 9881690, 19763380]

約数ペア:

[(1, 19763380), (2, 9881690), (4, 4940845), (5, 3952676), (7, 2823340), (10, 1976338), (13, 1520260), (14, 1411670), (20, 988169), (26, 760130), (28, 705835), (35, 564668), (52, 380065), (65, 304052), (70, 282334), (91, 217180), (130, 152026), (140, 141167), (182, 108590), (260, 76013), (364, 54295), (455, 43436), (910, 21718), (1820, 10859)]