21704540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{7589}}^1$

素因数の和:7622

約数の個数: 48

約数和(自身を含む): 53555040

約数和(自身を除く): 31850500

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 7589, 15178, 30356, 37945, 75890, 83479, 98657, 151780, 166958, 197314, 333916, 394628, 417395, 493285, 834790, 986570, 1085227, 1669580, 1973140, 2170454, 4340908, 5426135, 10852270, 21704540]

約数ペア:

[(1, 21704540), (2, 10852270), (4, 5426135), (5, 4340908), (10, 2170454), (11, 1973140), (13, 1669580), (20, 1085227), (22, 986570), (26, 834790), (44, 493285), (52, 417395), (55, 394628), (65, 333916), (110, 197314), (130, 166958), (143, 151780), (220, 98657), (260, 83479), (286, 75890), (572, 37945), (715, 30356), (1430, 15178), (2860, 7589)]