128215857

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{223}}^1$

素因数の和:394

約数の個数: 64

約数和(自身を含む): 227082240

約数和(自身を除く): 98866383

約数列:

[1, 3, 7, 11, 19, 21, 33, 57, 77, 131, 133, 209, 223, 231, 393, 399, 627, 669, 917, 1441, 1463, 1561, 2453, 2489, 2751, 4237, 4323, 4389, 4683, 7359, 7467, 10087, 12711, 17171, 17423, 27379, 29213, 29659, 30261, 46607, 51513, 52269, 82137, 87639, 88977, 139821, 191653, 204491, 321343, 326249, 555047, 574959, 613473, 964029, 978747, 1665141, 2249401, 3885329, 6105517, 6748203, 11655987, 18316551, 42738619, 128215857]

約数ペア:

[(1, 128215857), (3, 42738619), (7, 18316551), (11, 11655987), (19, 6748203), (21, 6105517), (33, 3885329), (57, 2249401), (77, 1665141), (131, 978747), (133, 964029), (209, 613473), (223, 574959), (231, 555047), (393, 326249), (399, 321343), (627, 204491), (669, 191653), (917, 139821), (1441, 88977), (1463, 87639), (1561, 82137), (2453, 52269), (2489, 51513), (2751, 46607), (4237, 30261), (4323, 29659), (4389, 29213), (4683, 27379), (7359, 17423), (7467, 17171), (10087, 12711)]