21390240

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{44563}}^1$

素因数の和:44581

約数の個数: 48

約数和(自身を含む): 67380768

約数和(自身を除く): 45990528

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 120, 160, 240, 480, 44563, 89126, 133689, 178252, 222815, 267378, 356504, 445630, 534756, 668445, 713008, 891260, 1069512, 1336890, 1426016, 1782520, 2139024, 2673780, 3565040, 4278048, 5347560, 7130080, 10695120, 21390240]

約数ペア:

[(1, 21390240), (2, 10695120), (3, 7130080), (4, 5347560), (5, 4278048), (6, 3565040), (8, 2673780), (10, 2139024), (12, 1782520), (15, 1426016), (16, 1336890), (20, 1069512), (24, 891260), (30, 713008), (32, 668445), (40, 534756), (48, 445630), (60, 356504), (80, 267378), (96, 222815), (120, 178252), (160, 133689), (240, 89126), (480, 44563)]