217420515

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{631}}^1$

素因数の和:705

約数の個数: 96

約数和(自身を含む): 441692160

約数和(自身を除く): 224271645

約数列:

[1, 3, 5, 9, 13, 15, 19, 31, 39, 45, 57, 65, 93, 95, 117, 155, 171, 195, 247, 279, 285, 403, 465, 585, 589, 631, 741, 855, 1209, 1235, 1395, 1767, 1893, 2015, 2223, 2945, 3155, 3627, 3705, 5301, 5679, 6045, 7657, 8203, 8835, 9465, 11115, 11989, 18135, 19561, 22971, 24609, 26505, 28395, 35967, 38285, 41015, 58683, 59945, 68913, 73827, 97805, 107901, 114855, 123045, 155857, 176049, 179835, 254293, 293415, 344565, 369135, 371659, 467571, 539505, 762879, 779285, 880245, 1114977, 1271465, 1402713, 1858295, 2288637, 2337855, 3344931, 3814395, 4831567, 5574885, 7013565, 11443185, 14494701, 16724655, 24157835, 43484103, 72473505, 217420515]

約数ペア:

[(1, 217420515), (3, 72473505), (5, 43484103), (9, 24157835), (13, 16724655), (15, 14494701), (19, 11443185), (31, 7013565), (39, 5574885), (45, 4831567), (57, 3814395), (65, 3344931), (93, 2337855), (95, 2288637), (117, 1858295), (155, 1402713), (171, 1271465), (195, 1114977), (247, 880245), (279, 779285), (285, 762879), (403, 539505), (465, 467571), (585, 371659), (589, 369135), (631, 344565), (741, 293415), (855, 254293), (1209, 179835), (1235, 176049), (1395, 155857), (1767, 123045), (1893, 114855), (2015, 107901), (2223, 97805), (2945, 73827), (3155, 68913), (3627, 59945), (3705, 58683), (5301, 41015), (5679, 38285), (6045, 35967), (7657, 28395), (8203, 26505), (8835, 24609), (9465, 22971), (11115, 19561), (11989, 18135)]