21412340

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{12899}}^1$

素因数の和:12991

約数の個数: 24

約数和(自身を含む): 45511200

約数和(自身を除く): 24098860

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 12899, 25798, 51596, 64495, 128990, 257980, 1070617, 2141234, 4282468, 5353085, 10706170, 21412340]

約数ペア:

[(1, 21412340), (2, 10706170), (4, 5353085), (5, 4282468), (10, 2141234), (20, 1070617), (83, 257980), (166, 128990), (332, 64495), (415, 51596), (830, 25798), (1660, 12899)]