19043960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{691}}^1$

素因数の和:768

約数の個数: 64

約数和(自身を含む): 47083680

約数和(自身を除く): 28039720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 53, 65, 104, 106, 130, 212, 260, 265, 424, 520, 530, 689, 691, 1060, 1378, 1382, 2120, 2756, 2764, 3445, 3455, 5512, 5528, 6890, 6910, 8983, 13780, 13820, 17966, 27560, 27640, 35932, 36623, 44915, 71864, 73246, 89830, 146492, 179660, 183115, 292984, 359320, 366230, 476099, 732460, 952198, 1464920, 1904396, 2380495, 3808792, 4760990, 9521980, 19043960]

約数ペア:

[(1, 19043960), (2, 9521980), (4, 4760990), (5, 3808792), (8, 2380495), (10, 1904396), (13, 1464920), (20, 952198), (26, 732460), (40, 476099), (52, 366230), (53, 359320), (65, 292984), (104, 183115), (106, 179660), (130, 146492), (212, 89830), (260, 73246), (265, 71864), (424, 44915), (520, 36623), (530, 35932), (689, 27640), (691, 27560), (1060, 17966), (1378, 13820), (1382, 13780), (2120, 8983), (2756, 6910), (2764, 6890), (3445, 5528), (3455, 5512)]