20950970

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{251}}^1\times {\mathrm{491}}^1$

素因数の和:766

約数の個数: 32

約数和(自身を含む): 40170816

約数和(自身を除く): 19219846

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 251, 491, 502, 982, 1255, 2455, 2510, 4267, 4910, 8347, 8534, 16694, 21335, 41735, 42670, 83470, 123241, 246482, 616205, 1232410, 2095097, 4190194, 10475485, 20950970]

約数ペア:

[(1, 20950970), (2, 10475485), (5, 4190194), (10, 2095097), (17, 1232410), (34, 616205), (85, 246482), (170, 123241), (251, 83470), (491, 42670), (502, 41735), (982, 21335), (1255, 16694), (2455, 8534), (2510, 8347), (4267, 4910)]