12920908

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{461}}^1$

素因数の和:503

約数の個数: 72

約数和(自身を含む): 30968784

約数和(自身を除く): 18047876

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 49, 52, 77, 91, 98, 143, 154, 182, 196, 286, 308, 364, 461, 539, 572, 637, 922, 1001, 1078, 1274, 1844, 2002, 2156, 2548, 3227, 4004, 5071, 5993, 6454, 7007, 10142, 11986, 12908, 14014, 20284, 22589, 23972, 28028, 35497, 41951, 45178, 65923, 70994, 83902, 90356, 131846, 141988, 167804, 248479, 263692, 293657, 461461, 496958, 587314, 922922, 993916, 1174628, 1845844, 3230227, 6460454, 12920908]

約数ペア:

[(1, 12920908), (2, 6460454), (4, 3230227), (7, 1845844), (11, 1174628), (13, 993916), (14, 922922), (22, 587314), (26, 496958), (28, 461461), (44, 293657), (49, 263692), (52, 248479), (77, 167804), (91, 141988), (98, 131846), (143, 90356), (154, 83902), (182, 70994), (196, 65923), (286, 45178), (308, 41951), (364, 35497), (461, 28028), (539, 23972), (572, 22589), (637, 20284), (922, 14014), (1001, 12908), (1078, 11986), (1274, 10142), (1844, 7007), (2002, 6454), (2156, 5993), (2548, 5071), (3227, 4004)]