21538458

素因数分解:

$2^1\times 3^2\times {\mathrm{53}}^1\times {\mathrm{107}}^1\times {\mathrm{211}}^1$

素因数の和:379

約数の個数: 48

約数和(自身を含む): 48218976

約数和(自身を除く): 26680518

約数列:

[1, 2, 3, 6, 9, 18, 53, 106, 107, 159, 211, 214, 318, 321, 422, 477, 633, 642, 954, 963, 1266, 1899, 1926, 3798, 5671, 11183, 11342, 17013, 22366, 22577, 33549, 34026, 45154, 51039, 67098, 67731, 100647, 102078, 135462, 201294, 203193, 406386, 1196581, 2393162, 3589743, 7179486, 10769229, 21538458]

約数ペア:

[(1, 21538458), (2, 10769229), (3, 7179486), (6, 3589743), (9, 2393162), (18, 1196581), (53, 406386), (106, 203193), (107, 201294), (159, 135462), (211, 102078), (214, 100647), (318, 67731), (321, 67098), (422, 51039), (477, 45154), (633, 34026), (642, 33549), (954, 22577), (963, 22366), (1266, 17013), (1899, 11342), (1926, 11183), (3798, 5671)]