261949860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{23857}}^1$

素因数の和:23933

約数の個数: 72

約数和(自身を含む): 807641016

約数和(自身を除く): 545691156

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 61, 90, 122, 180, 183, 244, 305, 366, 549, 610, 732, 915, 1098, 1220, 1830, 2196, 2745, 3660, 5490, 10980, 23857, 47714, 71571, 95428, 119285, 143142, 214713, 238570, 286284, 357855, 429426, 477140, 715710, 858852, 1073565, 1431420, 1455277, 2147130, 2910554, 4294260, 4365831, 5821108, 7276385, 8731662, 13097493, 14552770, 17463324, 21829155, 26194986, 29105540, 43658310, 52389972, 65487465, 87316620, 130974930, 261949860]

約数ペア:

[(1, 261949860), (2, 130974930), (3, 87316620), (4, 65487465), (5, 52389972), (6, 43658310), (9, 29105540), (10, 26194986), (12, 21829155), (15, 17463324), (18, 14552770), (20, 13097493), (30, 8731662), (36, 7276385), (45, 5821108), (60, 4365831), (61, 4294260), (90, 2910554), (122, 2147130), (180, 1455277), (183, 1431420), (244, 1073565), (305, 858852), (366, 715710), (549, 477140), (610, 429426), (732, 357855), (915, 286284), (1098, 238570), (1220, 214713), (1830, 143142), (2196, 119285), (2745, 95428), (3660, 71571), (5490, 47714), (10980, 23857)]