18927783

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1$

素因数の和:213

約数の個数: 64

約数和(自身を含む): 34974720

約数和(自身を除く): 16046937

約数列:

[1, 3, 7, 9, 17, 21, 27, 43, 51, 63, 119, 129, 137, 153, 189, 301, 357, 387, 411, 459, 731, 903, 959, 1071, 1161, 1233, 2193, 2329, 2709, 2877, 3213, 3699, 5117, 5891, 6579, 6987, 8127, 8631, 15351, 16303, 17673, 19737, 20961, 25893, 41237, 46053, 48909, 53019, 62883, 100147, 123711, 138159, 146727, 159057, 300441, 371133, 440181, 701029, 901323, 1113399, 2103087, 2703969, 6309261, 18927783]

約数ペア:

[(1, 18927783), (3, 6309261), (7, 2703969), (9, 2103087), (17, 1113399), (21, 901323), (27, 701029), (43, 440181), (51, 371133), (63, 300441), (119, 159057), (129, 146727), (137, 138159), (153, 123711), (189, 100147), (301, 62883), (357, 53019), (387, 48909), (411, 46053), (459, 41237), (731, 25893), (903, 20961), (959, 19737), (1071, 17673), (1161, 16303), (1233, 15351), (2193, 8631), (2329, 8127), (2709, 6987), (2877, 6579), (3213, 5891), (3699, 5117)]