21651678

素因数分解:

$2^1\times 3^3\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{449}}^1$

素因数の和:526

約数の個数: 64

約数和(自身を含む): 51840000

約数和(自身を除く): 30188322

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 38, 47, 54, 57, 94, 114, 141, 171, 282, 342, 423, 449, 513, 846, 893, 898, 1026, 1269, 1347, 1786, 2538, 2679, 2694, 4041, 5358, 8037, 8082, 8531, 12123, 16074, 17062, 21103, 24111, 24246, 25593, 42206, 48222, 51186, 63309, 76779, 126618, 153558, 189927, 230337, 379854, 400957, 460674, 569781, 801914, 1139562, 1202871, 2405742, 3608613, 7217226, 10825839, 21651678]

約数ペア:

[(1, 21651678), (2, 10825839), (3, 7217226), (6, 3608613), (9, 2405742), (18, 1202871), (19, 1139562), (27, 801914), (38, 569781), (47, 460674), (54, 400957), (57, 379854), (94, 230337), (114, 189927), (141, 153558), (171, 126618), (282, 76779), (342, 63309), (423, 51186), (449, 48222), (513, 42206), (846, 25593), (893, 24246), (898, 24111), (1026, 21103), (1269, 17062), (1347, 16074), (1786, 12123), (2538, 8531), (2679, 8082), (2694, 8037), (4041, 5358)]