890211920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{479}}^1\times {\mathrm{1787}}^1$

素因数の和:2292

約数の個数: 80

約数和(自身を含む): 2234856960

約数和(自身を除く): 1344645040

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 479, 520, 958, 1040, 1787, 1916, 2395, 3574, 3832, 4790, 6227, 7148, 7664, 8935, 9580, 12454, 14296, 17870, 19160, 23231, 24908, 28592, 31135, 35740, 38320, 46462, 49816, 62270, 71480, 92924, 99632, 116155, 124540, 142960, 185848, 232310, 249080, 371696, 464620, 498160, 855973, 929240, 1711946, 1858480, 3423892, 4279865, 6847784, 8559730, 11127649, 13695568, 17119460, 22255298, 34238920, 44510596, 55638245, 68477840, 89021192, 111276490, 178042384, 222552980, 445105960, 890211920]

約数ペア:

[(1, 890211920), (2, 445105960), (4, 222552980), (5, 178042384), (8, 111276490), (10, 89021192), (13, 68477840), (16, 55638245), (20, 44510596), (26, 34238920), (40, 22255298), (52, 17119460), (65, 13695568), (80, 11127649), (104, 8559730), (130, 6847784), (208, 4279865), (260, 3423892), (479, 1858480), (520, 1711946), (958, 929240), (1040, 855973), (1787, 498160), (1916, 464620), (2395, 371696), (3574, 249080), (3832, 232310), (4790, 185848), (6227, 142960), (7148, 124540), (7664, 116155), (8935, 99632), (9580, 92924), (12454, 71480), (14296, 62270), (17870, 49816), (19160, 46462), (23231, 38320), (24908, 35740), (28592, 31135)]