28557513

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 46500480

約数和(自身を除く): 17942967

約数列:

[1, 3, 9, 19, 23, 53, 57, 69, 137, 159, 171, 207, 411, 437, 477, 1007, 1219, 1233, 1311, 2603, 3021, 3151, 3657, 3933, 7261, 7809, 9063, 9453, 10971, 21783, 23161, 23427, 28359, 59869, 65349, 69483, 137959, 167003, 179607, 208449, 413877, 501009, 538821, 1241631, 1503027, 3173057, 9519171, 28557513]

約数ペア:

[(1, 28557513), (3, 9519171), (9, 3173057), (19, 1503027), (23, 1241631), (53, 538821), (57, 501009), (69, 413877), (137, 208449), (159, 179607), (171, 167003), (207, 137959), (411, 69483), (437, 65349), (477, 59869), (1007, 28359), (1219, 23427), (1233, 23161), (1311, 21783), (2603, 10971), (3021, 9453), (3151, 9063), (3657, 7809), (3933, 7261)]