20711730

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{2309}}^1$

素因数の和:2355

約数の個数: 64

約数和(自身を含む): 55883520

約数和(自身を除く): 35171790

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 23, 26, 30, 39, 46, 65, 69, 78, 115, 130, 138, 195, 230, 299, 345, 390, 598, 690, 897, 1495, 1794, 2309, 2990, 4485, 4618, 6927, 8970, 11545, 13854, 23090, 30017, 34635, 53107, 60034, 69270, 90051, 106214, 150085, 159321, 180102, 265535, 300170, 318642, 450255, 531070, 690391, 796605, 900510, 1380782, 1593210, 2071173, 3451955, 4142346, 6903910, 10355865, 20711730]

約数ペア:

[(1, 20711730), (2, 10355865), (3, 6903910), (5, 4142346), (6, 3451955), (10, 2071173), (13, 1593210), (15, 1380782), (23, 900510), (26, 796605), (30, 690391), (39, 531070), (46, 450255), (65, 318642), (69, 300170), (78, 265535), (115, 180102), (130, 159321), (138, 150085), (195, 106214), (230, 90051), (299, 69270), (345, 60034), (390, 53107), (598, 34635), (690, 30017), (897, 23090), (1495, 13854), (1794, 11545), (2309, 8970), (2990, 6927), (4485, 4618)]