64989860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{1381}}^1$

素因数の和:1584

約数の個数: 48

約数和(自身を含む): 147896112

約数和(自身を除く): 82906252

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 181, 260, 362, 724, 905, 1381, 1810, 2353, 2762, 3620, 4706, 5524, 6905, 9412, 11765, 13810, 17953, 23530, 27620, 35906, 47060, 71812, 89765, 179530, 249961, 359060, 499922, 999844, 1249805, 2499610, 3249493, 4999220, 6498986, 12997972, 16247465, 32494930, 64989860]

約数ペア:

[(1, 64989860), (2, 32494930), (4, 16247465), (5, 12997972), (10, 6498986), (13, 4999220), (20, 3249493), (26, 2499610), (52, 1249805), (65, 999844), (130, 499922), (181, 359060), (260, 249961), (362, 179530), (724, 89765), (905, 71812), (1381, 47060), (1810, 35906), (2353, 27620), (2762, 23530), (3620, 17953), (4706, 13810), (5524, 11765), (6905, 9412)]