20809425

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{3049}}^1$

素因数の和:3082

約数の個数: 48

約数和(自身を含む): 42358400

約数和(自身を除く): 21548975

約数列:

[1, 3, 5, 7, 13, 15, 21, 25, 35, 39, 65, 75, 91, 105, 175, 195, 273, 325, 455, 525, 975, 1365, 2275, 3049, 6825, 9147, 15245, 21343, 39637, 45735, 64029, 76225, 106715, 118911, 198185, 228675, 277459, 320145, 533575, 594555, 832377, 990925, 1387295, 1600725, 2972775, 4161885, 6936475, 20809425]

約数ペア:

[(1, 20809425), (3, 6936475), (5, 4161885), (7, 2972775), (13, 1600725), (15, 1387295), (21, 990925), (25, 832377), (35, 594555), (39, 533575), (65, 320145), (75, 277459), (91, 228675), (105, 198185), (175, 118911), (195, 106715), (273, 76225), (325, 64029), (455, 45735), (525, 39637), (975, 21343), (1365, 15245), (2275, 9147), (3049, 6825)]