12981228

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{173}}^1$

素因数の和:243

約数の個数: 72

約数和(自身を含む): 33879888

約数和(自身を除く): 20898660

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 37, 39, 52, 74, 78, 111, 148, 156, 169, 173, 222, 338, 346, 444, 481, 507, 519, 676, 692, 962, 1014, 1038, 1443, 1924, 2028, 2076, 2249, 2886, 4498, 5772, 6253, 6401, 6747, 8996, 12506, 12802, 13494, 18759, 19203, 25012, 25604, 26988, 29237, 37518, 38406, 58474, 75036, 76812, 83213, 87711, 116948, 166426, 175422, 249639, 332852, 350844, 499278, 998556, 1081769, 2163538, 3245307, 4327076, 6490614, 12981228]

約数ペア:

[(1, 12981228), (2, 6490614), (3, 4327076), (4, 3245307), (6, 2163538), (12, 1081769), (13, 998556), (26, 499278), (37, 350844), (39, 332852), (52, 249639), (74, 175422), (78, 166426), (111, 116948), (148, 87711), (156, 83213), (169, 76812), (173, 75036), (222, 58474), (338, 38406), (346, 37518), (444, 29237), (481, 26988), (507, 25604), (519, 25012), (676, 19203), (692, 18759), (962, 13494), (1014, 12802), (1038, 12506), (1443, 8996), (1924, 6747), (2028, 6401), (2076, 6253), (2249, 5772), (2886, 4498)]