20438726

素因数分解:

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

素因数の和:285

約数の個数: 64

約数和(自身を含む): 41762304

約数和(自身を除く): 21323578

約数列:

[1, 2, 7, 11, 14, 17, 22, 34, 37, 74, 77, 119, 154, 187, 211, 238, 259, 374, 407, 422, 518, 629, 814, 1258, 1309, 1477, 2321, 2618, 2849, 2954, 3587, 4403, 4642, 5698, 6919, 7174, 7807, 8806, 13838, 15614, 16247, 25109, 32494, 39457, 48433, 50218, 54649, 78914, 85877, 96866, 109298, 132719, 171754, 265438, 276199, 552398, 601139, 929033, 1202278, 1459909, 1858066, 2919818, 10219363, 20438726]

約数ペア:

[(1, 20438726), (2, 10219363), (7, 2919818), (11, 1858066), (14, 1459909), (17, 1202278), (22, 929033), (34, 601139), (37, 552398), (74, 276199), (77, 265438), (119, 171754), (154, 132719), (187, 109298), (211, 96866), (238, 85877), (259, 78914), (374, 54649), (407, 50218), (422, 48433), (518, 39457), (629, 32494), (814, 25109), (1258, 16247), (1309, 15614), (1477, 13838), (2321, 8806), (2618, 7807), (2849, 7174), (2954, 6919), (3587, 5698), (4403, 4642)]