19771700

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{227}}^1$

素因数の和:321

約数の個数: 72

約数和(自身を含む): 47101152

約数和(自身を除く): 27329452

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 67, 100, 130, 134, 227, 260, 268, 325, 335, 454, 650, 670, 871, 908, 1135, 1300, 1340, 1675, 1742, 2270, 2951, 3350, 3484, 4355, 4540, 5675, 5902, 6700, 8710, 11350, 11804, 14755, 15209, 17420, 21775, 22700, 29510, 30418, 43550, 59020, 60836, 73775, 76045, 87100, 147550, 152090, 197717, 295100, 304180, 380225, 395434, 760450, 790868, 988585, 1520900, 1977170, 3954340, 4942925, 9885850, 19771700]

約数ペア:

[(1, 19771700), (2, 9885850), (4, 4942925), (5, 3954340), (10, 1977170), (13, 1520900), (20, 988585), (25, 790868), (26, 760450), (50, 395434), (52, 380225), (65, 304180), (67, 295100), (100, 197717), (130, 152090), (134, 147550), (227, 87100), (260, 76045), (268, 73775), (325, 60836), (335, 59020), (454, 43550), (650, 30418), (670, 29510), (871, 22700), (908, 21775), (1135, 17420), (1300, 15209), (1340, 14755), (1675, 11804), (1742, 11350), (2270, 8710), (2951, 6700), (3350, 5902), (3484, 5675), (4355, 4540)]