81754904

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{211}}^1$

素因数の和:289

約数の個数: 128

約数和(自身を含む): 208811520

約数和(自身を除く): 127056616

約数列:

[1, 2, 4, 7, 8, 11, 14, 17, 22, 28, 34, 37, 44, 56, 68, 74, 77, 88, 119, 136, 148, 154, 187, 211, 238, 259, 296, 308, 374, 407, 422, 476, 518, 616, 629, 748, 814, 844, 952, 1036, 1258, 1309, 1477, 1496, 1628, 1688, 2072, 2321, 2516, 2618, 2849, 2954, 3256, 3587, 4403, 4642, 5032, 5236, 5698, 5908, 6919, 7174, 7807, 8806, 9284, 10472, 11396, 11816, 13838, 14348, 15614, 16247, 17612, 18568, 22792, 25109, 27676, 28696, 31228, 32494, 35224, 39457, 48433, 50218, 54649, 55352, 62456, 64988, 78914, 85877, 96866, 100436, 109298, 129976, 132719, 157828, 171754, 193732, 200872, 218596, 265438, 276199, 315656, 343508, 387464, 437192, 530876, 552398, 601139, 687016, 929033, 1061752, 1104796, 1202278, 1459909, 1858066, 2209592, 2404556, 2919818, 3716132, 4809112, 5839636, 7432264, 10219363, 11679272, 20438726, 40877452, 81754904]

約数ペア:

[(1, 81754904), (2, 40877452), (4, 20438726), (7, 11679272), (8, 10219363), (11, 7432264), (14, 5839636), (17, 4809112), (22, 3716132), (28, 2919818), (34, 2404556), (37, 2209592), (44, 1858066), (56, 1459909), (68, 1202278), (74, 1104796), (77, 1061752), (88, 929033), (119, 687016), (136, 601139), (148, 552398), (154, 530876), (187, 437192), (211, 387464), (238, 343508), (259, 315656), (296, 276199), (308, 265438), (374, 218596), (407, 200872), (422, 193732), (476, 171754), (518, 157828), (616, 132719), (629, 129976), (748, 109298), (814, 100436), (844, 96866), (952, 85877), (1036, 78914), (1258, 64988), (1309, 62456), (1477, 55352), (1496, 54649), (1628, 50218), (1688, 48433), (2072, 39457), (2321, 35224), (2516, 32494), (2618, 31228), (2849, 28696), (2954, 27676), (3256, 25109), (3587, 22792), (4403, 18568), (4642, 17612), (5032, 16247), (5236, 15614), (5698, 14348), (5908, 13838), (6919, 11816), (7174, 11396), (7807, 10472), (8806, 9284)]