78903972

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{353}}^1\times {\mathrm{887}}^1$

素因数の和:1257

約数の個数: 72

約数和(自身を含む): 228848256

約数和(自身を除く): 149944284

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252, 353, 706, 887, 1059, 1412, 1774, 2118, 2471, 2661, 3177, 3548, 4236, 4942, 5322, 6209, 6354, 7413, 7983, 9884, 10644, 12418, 12708, 14826, 15966, 18627, 22239, 24836, 29652, 31932, 37254, 44478, 55881, 74508, 88956, 111762, 223524, 313111, 626222, 939333, 1252444, 1878666, 2191777, 2817999, 3757332, 4383554, 5635998, 6575331, 8767108, 11271996, 13150662, 19725993, 26301324, 39451986, 78903972]

約数ペア:

[(1, 78903972), (2, 39451986), (3, 26301324), (4, 19725993), (6, 13150662), (7, 11271996), (9, 8767108), (12, 6575331), (14, 5635998), (18, 4383554), (21, 3757332), (28, 2817999), (36, 2191777), (42, 1878666), (63, 1252444), (84, 939333), (126, 626222), (252, 313111), (353, 223524), (706, 111762), (887, 88956), (1059, 74508), (1412, 55881), (1774, 44478), (2118, 37254), (2471, 31932), (2661, 29652), (3177, 24836), (3548, 22239), (4236, 18627), (4942, 15966), (5322, 14826), (6209, 12708), (6354, 12418), (7413, 10644), (7983, 9884)]