39428420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{43}}^1\times {\mathrm{127}}^1$

素因数の和:217

約数の個数: 72

約数和(自身を含む): 90123264

約数和(自身を除く): 50694844

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 43, 76, 86, 95, 127, 172, 190, 215, 254, 361, 380, 430, 508, 635, 722, 817, 860, 1270, 1444, 1634, 1805, 2413, 2540, 3268, 3610, 4085, 4826, 5461, 7220, 8170, 9652, 10922, 12065, 15523, 16340, 21844, 24130, 27305, 31046, 45847, 48260, 54610, 62092, 77615, 91694, 103759, 109220, 155230, 183388, 207518, 229235, 310460, 415036, 458470, 518795, 916940, 1037590, 1971421, 2075180, 3942842, 7885684, 9857105, 19714210, 39428420]

約数ペア:

[(1, 39428420), (2, 19714210), (4, 9857105), (5, 7885684), (10, 3942842), (19, 2075180), (20, 1971421), (38, 1037590), (43, 916940), (76, 518795), (86, 458470), (95, 415036), (127, 310460), (172, 229235), (190, 207518), (215, 183388), (254, 155230), (361, 109220), (380, 103759), (430, 91694), (508, 77615), (635, 62092), (722, 54610), (817, 48260), (860, 45847), (1270, 31046), (1444, 27305), (1634, 24130), (1805, 21844), (2413, 16340), (2540, 15523), (3268, 12065), (3610, 10922), (4085, 9652), (4826, 8170), (5461, 7220)]