201920715

素因数分解:

$3^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{101}}^1\times {\mathrm{251}}^1$

素因数の和:425

約数の個数: 64

約数和(自身を含む): 370137600

約数和(自身を除く): 168216885

約数列:

[1, 3, 5, 9, 15, 27, 45, 59, 101, 135, 177, 251, 295, 303, 505, 531, 753, 885, 909, 1255, 1515, 1593, 2259, 2655, 2727, 3765, 4545, 5959, 6777, 7965, 11295, 13635, 14809, 17877, 25351, 29795, 33885, 44427, 53631, 74045, 76053, 89385, 126755, 133281, 160893, 222135, 228159, 268155, 380265, 399843, 666405, 684477, 804465, 1140795, 1495709, 1999215, 3422385, 4487127, 7478545, 13461381, 22435635, 40384143, 67306905, 201920715]

約数ペア:

[(1, 201920715), (3, 67306905), (5, 40384143), (9, 22435635), (15, 13461381), (27, 7478545), (45, 4487127), (59, 3422385), (101, 1999215), (135, 1495709), (177, 1140795), (251, 804465), (295, 684477), (303, 666405), (505, 399843), (531, 380265), (753, 268155), (885, 228159), (909, 222135), (1255, 160893), (1515, 133281), (1593, 126755), (2259, 89385), (2655, 76053), (2727, 74045), (3765, 53631), (4545, 44427), (5959, 33885), (6777, 29795), (7965, 25351), (11295, 17877), (13635, 14809)]