18504540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{461}}^1$

素因数の和:699

約数の個数: 72

約数和(自身を含む): 56504448

約数和(自身を除く): 37999908

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 223, 446, 461, 669, 892, 922, 1115, 1338, 1383, 1844, 2007, 2230, 2305, 2676, 2766, 3345, 4014, 4149, 4460, 4610, 5532, 6690, 6915, 8028, 8298, 9220, 10035, 13380, 13830, 16596, 20070, 20745, 27660, 40140, 41490, 82980, 102803, 205606, 308409, 411212, 514015, 616818, 925227, 1028030, 1233636, 1542045, 1850454, 2056060, 3084090, 3700908, 4626135, 6168180, 9252270, 18504540]

約数ペア:

[(1, 18504540), (2, 9252270), (3, 6168180), (4, 4626135), (5, 3700908), (6, 3084090), (9, 2056060), (10, 1850454), (12, 1542045), (15, 1233636), (18, 1028030), (20, 925227), (30, 616818), (36, 514015), (45, 411212), (60, 308409), (90, 205606), (180, 102803), (223, 82980), (446, 41490), (461, 40140), (669, 27660), (892, 20745), (922, 20070), (1115, 16596), (1338, 13830), (1383, 13380), (1844, 10035), (2007, 9220), (2230, 8298), (2305, 8028), (2676, 6915), (2766, 6690), (3345, 5532), (4014, 4610), (4149, 4460)]