31251015

素因数分解:

$3^5\times 5^1\times {\mathrm{17}}^2\times {\mathrm{89}}^1$

素因数の和:143

約数の個数: 72

約数和(自身を含む): 60343920

約数和(自身を除く): 29092905

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 81, 85, 89, 135, 153, 243, 255, 267, 289, 405, 445, 459, 765, 801, 867, 1215, 1335, 1377, 1445, 1513, 2295, 2403, 2601, 4005, 4131, 4335, 4539, 6885, 7209, 7565, 7803, 12015, 13005, 13617, 20655, 21627, 22695, 23409, 25721, 36045, 39015, 40851, 68085, 70227, 77163, 108135, 117045, 122553, 128605, 204255, 231489, 351135, 367659, 385815, 612765, 694467, 1157445, 1838295, 2083401, 3472335, 6250203, 10417005, 31251015]

約数ペア:

[(1, 31251015), (3, 10417005), (5, 6250203), (9, 3472335), (15, 2083401), (17, 1838295), (27, 1157445), (45, 694467), (51, 612765), (81, 385815), (85, 367659), (89, 351135), (135, 231489), (153, 204255), (243, 128605), (255, 122553), (267, 117045), (289, 108135), (405, 77163), (445, 70227), (459, 68085), (765, 40851), (801, 39015), (867, 36045), (1215, 25721), (1335, 23409), (1377, 22695), (1445, 21627), (1513, 20655), (2295, 13617), (2403, 13005), (2601, 12015), (4005, 7803), (4131, 7565), (4335, 7209), (4539, 6885)]