988988

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1$

素因数の和:67

約数の個数: 72

約数和(自身を含む): 2459520

約数和(自身を除く): 1470532

約数列:

[1, 2, 4, 7, 11, 13, 14, 19, 22, 26, 28, 38, 44, 52, 76, 77, 91, 133, 143, 154, 169, 182, 209, 247, 266, 286, 308, 338, 364, 418, 494, 532, 572, 676, 836, 988, 1001, 1183, 1463, 1729, 1859, 2002, 2366, 2717, 2926, 3211, 3458, 3718, 4004, 4732, 5434, 5852, 6422, 6916, 7436, 10868, 12844, 13013, 19019, 22477, 26026, 35321, 38038, 44954, 52052, 70642, 76076, 89908, 141284, 247247, 494494, 988988]

約数ペア:

[(1, 988988), (2, 494494), (4, 247247), (7, 141284), (11, 89908), (13, 76076), (14, 70642), (19, 52052), (22, 44954), (26, 38038), (28, 35321), (38, 26026), (44, 22477), (52, 19019), (76, 13013), (77, 12844), (91, 10868), (133, 7436), (143, 6916), (154, 6422), (169, 5852), (182, 5434), (209, 4732), (247, 4004), (266, 3718), (286, 3458), (308, 3211), (338, 2926), (364, 2717), (418, 2366), (494, 2002), (532, 1859), (572, 1729), (676, 1463), (836, 1183), (988, 1001)]