21086175

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{419}}^1$

素因数の和:504

約数の個数: 48

約数和(自身を含む): 38747520

約数和(自身を除く): 17661345

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 61, 75, 165, 183, 275, 305, 419, 671, 825, 915, 1257, 1525, 2013, 2095, 3355, 4575, 4609, 6285, 10065, 10475, 13827, 16775, 23045, 25559, 31425, 50325, 69135, 76677, 115225, 127795, 281149, 345675, 383385, 638975, 843447, 1405745, 1916925, 4217235, 7028725, 21086175]

約数ペア:

[(1, 21086175), (3, 7028725), (5, 4217235), (11, 1916925), (15, 1405745), (25, 843447), (33, 638975), (55, 383385), (61, 345675), (75, 281149), (165, 127795), (183, 115225), (275, 76677), (305, 69135), (419, 50325), (671, 31425), (825, 25559), (915, 23045), (1257, 16775), (1525, 13827), (2013, 10475), (2095, 10065), (3355, 6285), (4575, 4609)]