21398040

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{19813}}^1$

素因数の和:19833

約数の個数: 64

約数和(自身を含む): 71330400

約数和(自身を除く): 49932360

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 108, 120, 135, 180, 216, 270, 360, 540, 1080, 19813, 39626, 59439, 79252, 99065, 118878, 158504, 178317, 198130, 237756, 297195, 356634, 396260, 475512, 534951, 594390, 713268, 792520, 891585, 1069902, 1188780, 1426536, 1783170, 2139804, 2377560, 2674755, 3566340, 4279608, 5349510, 7132680, 10699020, 21398040]

約数ペア:

[(1, 21398040), (2, 10699020), (3, 7132680), (4, 5349510), (5, 4279608), (6, 3566340), (8, 2674755), (9, 2377560), (10, 2139804), (12, 1783170), (15, 1426536), (18, 1188780), (20, 1069902), (24, 891585), (27, 792520), (30, 713268), (36, 594390), (40, 534951), (45, 475512), (54, 396260), (60, 356634), (72, 297195), (90, 237756), (108, 198130), (120, 178317), (135, 158504), (180, 118878), (216, 99065), (270, 79252), (360, 59439), (540, 39626), (1080, 19813)]