19799577

素因数分解:

$3^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1$

素因数の和:195

約数の個数: 72

約数和(自身を含む): 37346400

約数和(自身を除く): 17546823

約数列:

[1, 3, 7, 9, 17, 19, 21, 49, 51, 57, 63, 119, 133, 139, 147, 153, 171, 323, 357, 399, 417, 441, 833, 931, 969, 973, 1071, 1197, 1251, 2261, 2363, 2499, 2641, 2793, 2907, 2919, 6783, 6811, 7089, 7497, 7923, 8379, 8757, 15827, 16541, 18487, 20349, 20433, 21267, 23769, 44897, 47481, 49623, 55461, 61299, 115787, 129409, 134691, 142443, 148869, 166383, 314279, 347361, 388227, 404073, 942837, 1042083, 1164681, 2199953, 2828511, 6599859, 19799577]

約数ペア:

[(1, 19799577), (3, 6599859), (7, 2828511), (9, 2199953), (17, 1164681), (19, 1042083), (21, 942837), (49, 404073), (51, 388227), (57, 347361), (63, 314279), (119, 166383), (133, 148869), (139, 142443), (147, 134691), (153, 129409), (171, 115787), (323, 61299), (357, 55461), (399, 49623), (417, 47481), (441, 44897), (833, 23769), (931, 21267), (969, 20433), (973, 20349), (1071, 18487), (1197, 16541), (1251, 15827), (2261, 8757), (2363, 8379), (2499, 7923), (2641, 7497), (2793, 7089), (2907, 6811), (2919, 6783)]