20746460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{379}}^1$

素因数の和:435

約数の個数: 96

約数和(自身を含む): 55157760

約数和(自身を除く): 34411300

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 23, 28, 34, 35, 46, 68, 70, 85, 92, 115, 119, 140, 161, 170, 230, 238, 322, 340, 379, 391, 460, 476, 595, 644, 758, 782, 805, 1190, 1516, 1564, 1610, 1895, 1955, 2380, 2653, 2737, 3220, 3790, 3910, 5306, 5474, 6443, 7580, 7820, 8717, 10612, 10948, 12886, 13265, 13685, 17434, 25772, 26530, 27370, 32215, 34868, 43585, 45101, 53060, 54740, 61019, 64430, 87170, 90202, 122038, 128860, 148189, 174340, 180404, 225505, 244076, 296378, 305095, 451010, 592756, 610190, 740945, 902020, 1037323, 1220380, 1481890, 2074646, 2963780, 4149292, 5186615, 10373230, 20746460]

約数ペア:

[(1, 20746460), (2, 10373230), (4, 5186615), (5, 4149292), (7, 2963780), (10, 2074646), (14, 1481890), (17, 1220380), (20, 1037323), (23, 902020), (28, 740945), (34, 610190), (35, 592756), (46, 451010), (68, 305095), (70, 296378), (85, 244076), (92, 225505), (115, 180404), (119, 174340), (140, 148189), (161, 128860), (170, 122038), (230, 90202), (238, 87170), (322, 64430), (340, 61019), (379, 54740), (391, 53060), (460, 45101), (476, 43585), (595, 34868), (644, 32215), (758, 27370), (782, 26530), (805, 25772), (1190, 17434), (1516, 13685), (1564, 13265), (1610, 12886), (1895, 10948), (1955, 10612), (2380, 8717), (2653, 7820), (2737, 7580), (3220, 6443), (3790, 5474), (3910, 5306)]