81988676

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^2\times {\mathrm{277}}^1$

素因数の和:361

約数の個数: 72

約数和(自身を含む): 185508288

約数和(自身を除く): 103519612

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 31, 44, 62, 77, 124, 154, 217, 277, 308, 341, 434, 554, 682, 868, 961, 1108, 1364, 1922, 1939, 2387, 3047, 3844, 3878, 4774, 6094, 6727, 7756, 8587, 9548, 10571, 12188, 13454, 17174, 21142, 21329, 26908, 34348, 42284, 42658, 60109, 73997, 85316, 94457, 120218, 147994, 188914, 240436, 266197, 295988, 377828, 532394, 661199, 1064788, 1322398, 1863379, 2644796, 2928167, 3726758, 5856334, 7453516, 11712668, 20497169, 40994338, 81988676]

約数ペア:

[(1, 81988676), (2, 40994338), (4, 20497169), (7, 11712668), (11, 7453516), (14, 5856334), (22, 3726758), (28, 2928167), (31, 2644796), (44, 1863379), (62, 1322398), (77, 1064788), (124, 661199), (154, 532394), (217, 377828), (277, 295988), (308, 266197), (341, 240436), (434, 188914), (554, 147994), (682, 120218), (868, 94457), (961, 85316), (1108, 73997), (1364, 60109), (1922, 42658), (1939, 42284), (2387, 34348), (3047, 26908), (3844, 21329), (3878, 21142), (4774, 17174), (6094, 13454), (6727, 12188), (7756, 10571), (8587, 9548)]