26772980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{89}}^2$

素因数の和:213

約数の個数: 54

約数和(自身を含む): 61572546

約数和(自身を除く): 34799566

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 89, 130, 169, 178, 260, 338, 356, 445, 676, 845, 890, 1157, 1690, 1780, 2314, 3380, 4628, 5785, 7921, 11570, 15041, 15842, 23140, 30082, 31684, 39605, 60164, 75205, 79210, 102973, 150410, 158420, 205946, 300820, 411892, 514865, 1029730, 1338649, 2059460, 2677298, 5354596, 6693245, 13386490, 26772980]

約数ペア:

[(1, 26772980), (2, 13386490), (4, 6693245), (5, 5354596), (10, 2677298), (13, 2059460), (20, 1338649), (26, 1029730), (52, 514865), (65, 411892), (89, 300820), (130, 205946), (169, 158420), (178, 150410), (260, 102973), (338, 79210), (356, 75205), (445, 60164), (676, 39605), (845, 31684), (890, 30082), (1157, 23140), (1690, 15842), (1780, 15041), (2314, 11570), (3380, 7921), (4628, 5785)]