2049392020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{19559}}^1$

素因数の和:19625

約数の個数: 72

約数和(自身を含む): 4810821120

約数和(自身を除く): 2761429100

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 169, 260, 310, 338, 403, 620, 676, 806, 845, 1612, 1690, 2015, 3380, 4030, 5239, 8060, 10478, 19559, 20956, 26195, 39118, 52390, 78236, 97795, 104780, 195590, 254267, 391180, 508534, 606329, 1017068, 1212658, 1271335, 2425316, 2542670, 3031645, 3305471, 5085340, 6063290, 6610942, 7882277, 12126580, 13221884, 15764554, 16527355, 31529108, 33054710, 39411385, 66109420, 78822770, 102469601, 157645540, 204939202, 409878404, 512348005, 1024696010, 2049392020]

約数ペア:

[(1, 2049392020), (2, 1024696010), (4, 512348005), (5, 409878404), (10, 204939202), (13, 157645540), (20, 102469601), (26, 78822770), (31, 66109420), (52, 39411385), (62, 33054710), (65, 31529108), (124, 16527355), (130, 15764554), (155, 13221884), (169, 12126580), (260, 7882277), (310, 6610942), (338, 6063290), (403, 5085340), (620, 3305471), (676, 3031645), (806, 2542670), (845, 2425316), (1612, 1271335), (1690, 1212658), (2015, 1017068), (3380, 606329), (4030, 508534), (5239, 391180), (8060, 254267), (10478, 195590), (19559, 104780), (20956, 97795), (26195, 78236), (39118, 52390)]