18981858

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{239}}^1$

素因数の和:343

約数の個数: 64

約数和(自身を含む): 45711360

約数和(自身を除く): 26729502

約数列:

[1, 2, 3, 6, 7, 14, 21, 31, 42, 61, 62, 93, 122, 183, 186, 217, 239, 366, 427, 434, 478, 651, 717, 854, 1281, 1302, 1434, 1673, 1891, 2562, 3346, 3782, 5019, 5673, 7409, 10038, 11346, 13237, 14579, 14818, 22227, 26474, 29158, 39711, 43737, 44454, 51863, 79422, 87474, 102053, 103726, 155589, 204106, 306159, 311178, 451949, 612318, 903898, 1355847, 2711694, 3163643, 6327286, 9490929, 18981858]

約数ペア:

[(1, 18981858), (2, 9490929), (3, 6327286), (6, 3163643), (7, 2711694), (14, 1355847), (21, 903898), (31, 612318), (42, 451949), (61, 311178), (62, 306159), (93, 204106), (122, 155589), (183, 103726), (186, 102053), (217, 87474), (239, 79422), (366, 51863), (427, 44454), (434, 43737), (478, 39711), (651, 29158), (717, 26474), (854, 22227), (1281, 14818), (1302, 14579), (1434, 13237), (1673, 11346), (1891, 10038), (2562, 7409), (3346, 5673), (3782, 5019)]