1290380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{709}}^1$

素因数の和:738

約数の個数: 48

約数和(自身を含む): 3339840

約数和(自身を除く): 2049460

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, 709, 910, 1418, 1820, 2836, 3545, 4963, 7090, 9217, 9926, 14180, 18434, 19852, 24815, 36868, 46085, 49630, 64519, 92170, 99260, 129038, 184340, 258076, 322595, 645190, 1290380]

約数ペア:

[(1, 1290380), (2, 645190), (4, 322595), (5, 258076), (7, 184340), (10, 129038), (13, 99260), (14, 92170), (20, 64519), (26, 49630), (28, 46085), (35, 36868), (52, 24815), (65, 19852), (70, 18434), (91, 14180), (130, 9926), (140, 9217), (182, 7090), (260, 4963), (364, 3545), (455, 2836), (709, 1820), (910, 1418)]