81720030

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{12553}}^1$

素因数の和:12601

約数の個数: 64

約数和(自身を含む): 231395328

約数和(自身を除く): 149675298

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 31, 35, 42, 62, 70, 93, 105, 155, 186, 210, 217, 310, 434, 465, 651, 930, 1085, 1302, 2170, 3255, 6510, 12553, 25106, 37659, 62765, 75318, 87871, 125530, 175742, 188295, 263613, 376590, 389143, 439355, 527226, 778286, 878710, 1167429, 1318065, 1945715, 2334858, 2636130, 2724001, 3891430, 5448002, 5837145, 8172003, 11674290, 13620005, 16344006, 27240010, 40860015, 81720030]

約数ペア:

[(1, 81720030), (2, 40860015), (3, 27240010), (5, 16344006), (6, 13620005), (7, 11674290), (10, 8172003), (14, 5837145), (15, 5448002), (21, 3891430), (30, 2724001), (31, 2636130), (35, 2334858), (42, 1945715), (62, 1318065), (70, 1167429), (93, 878710), (105, 778286), (155, 527226), (186, 439355), (210, 389143), (217, 376590), (310, 263613), (434, 188295), (465, 175742), (651, 125530), (930, 87871), (1085, 75318), (1302, 62765), (2170, 37659), (3255, 25106), (6510, 12553)]