20786475

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{503}}^1$

素因数の和:564

約数の個数: 48

約数和(自身を含む): 37497600

約数和(自身を除く): 16711125

約数列:

[1, 3, 5, 15, 19, 25, 29, 57, 75, 87, 95, 145, 285, 435, 475, 503, 551, 725, 1425, 1509, 1653, 2175, 2515, 2755, 7545, 8265, 9557, 12575, 13775, 14587, 28671, 37725, 41325, 43761, 47785, 72935, 143355, 218805, 238925, 277153, 364675, 716775, 831459, 1094025, 1385765, 4157295, 6928825, 20786475]

約数ペア:

[(1, 20786475), (3, 6928825), (5, 4157295), (15, 1385765), (19, 1094025), (25, 831459), (29, 716775), (57, 364675), (75, 277153), (87, 238925), (95, 218805), (145, 143355), (285, 72935), (435, 47785), (475, 43761), (503, 41325), (551, 37725), (725, 28671), (1425, 14587), (1509, 13775), (1653, 12575), (2175, 9557), (2515, 8265), (2755, 7545)]