18343980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{457}}^1$

素因数の和:695

約数の個数: 72

約数和(自身を含む): 56015232

約数和(自身を除く): 37671252

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 223, 446, 457, 669, 892, 914, 1115, 1338, 1371, 1828, 2007, 2230, 2285, 2676, 2742, 3345, 4014, 4113, 4460, 4570, 5484, 6690, 6855, 8028, 8226, 9140, 10035, 13380, 13710, 16452, 20070, 20565, 27420, 40140, 41130, 82260, 101911, 203822, 305733, 407644, 509555, 611466, 917199, 1019110, 1222932, 1528665, 1834398, 2038220, 3057330, 3668796, 4585995, 6114660, 9171990, 18343980]

約数ペア:

[(1, 18343980), (2, 9171990), (3, 6114660), (4, 4585995), (5, 3668796), (6, 3057330), (9, 2038220), (10, 1834398), (12, 1528665), (15, 1222932), (18, 1019110), (20, 917199), (30, 611466), (36, 509555), (45, 407644), (60, 305733), (90, 203822), (180, 101911), (223, 82260), (446, 41130), (457, 40140), (669, 27420), (892, 20565), (914, 20070), (1115, 16452), (1338, 13710), (1371, 13380), (1828, 10035), (2007, 9140), (2230, 8226), (2285, 8028), (2676, 6855), (2742, 6690), (3345, 5484), (4014, 4570), (4113, 4460)]