21583455

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{1597}}^1$

素因数の和:1675

約数の個数: 32

約数和(自身を含む): 37278144

約数和(自身を除く): 15694689

約数列:

[1, 3, 5, 15, 17, 51, 53, 85, 159, 255, 265, 795, 901, 1597, 2703, 4505, 4791, 7985, 13515, 23955, 27149, 81447, 84641, 135745, 253923, 407235, 423205, 1269615, 1438897, 4316691, 7194485, 21583455]

約数ペア:

[(1, 21583455), (3, 7194485), (5, 4316691), (15, 1438897), (17, 1269615), (51, 423205), (53, 407235), (85, 253923), (159, 135745), (255, 84641), (265, 81447), (795, 27149), (901, 23955), (1597, 13515), (2703, 7985), (4505, 4791)]