12979720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{229}}^1$

素因数の和:362

約数の個数: 64

約数和(自身を含む): 31878000

約数和(自身を除く): 18898280

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 109, 130, 218, 229, 260, 436, 458, 520, 545, 872, 916, 1090, 1145, 1417, 1832, 2180, 2290, 2834, 2977, 4360, 4580, 5668, 5954, 7085, 9160, 11336, 11908, 14170, 14885, 23816, 24961, 28340, 29770, 49922, 56680, 59540, 99844, 119080, 124805, 199688, 249610, 324493, 499220, 648986, 998440, 1297972, 1622465, 2595944, 3244930, 6489860, 12979720]

約数ペア:

[(1, 12979720), (2, 6489860), (4, 3244930), (5, 2595944), (8, 1622465), (10, 1297972), (13, 998440), (20, 648986), (26, 499220), (40, 324493), (52, 249610), (65, 199688), (104, 124805), (109, 119080), (130, 99844), (218, 59540), (229, 56680), (260, 49922), (436, 29770), (458, 28340), (520, 24961), (545, 23816), (872, 14885), (916, 14170), (1090, 11908), (1145, 11336), (1417, 9160), (1832, 7085), (2180, 5954), (2290, 5668), (2834, 4580), (2977, 4360)]