21000270975

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{95597}}^1$

素因数の和:95740

約数の個数: 48

約数和(自身を含む): 36273705120

約数和(自身を除く): 15273434145

約数列:

[1, 3, 5, 15, 25, 29, 75, 87, 101, 145, 303, 435, 505, 725, 1515, 2175, 2525, 2929, 7575, 8787, 14645, 43935, 73225, 95597, 219675, 286791, 477985, 1433955, 2389925, 2772313, 7169775, 8316939, 9655297, 13861565, 28965891, 41584695, 48276485, 69307825, 144829455, 207923475, 241382425, 280003613, 724147275, 840010839, 1400018065, 4200054195, 7000090325, 21000270975]

約数ペア:

[(1, 21000270975), (3, 7000090325), (5, 4200054195), (15, 1400018065), (25, 840010839), (29, 724147275), (75, 280003613), (87, 241382425), (101, 207923475), (145, 144829455), (303, 69307825), (435, 48276485), (505, 41584695), (725, 28965891), (1515, 13861565), (2175, 9655297), (2525, 8316939), (2929, 7169775), (7575, 2772313), (8787, 2389925), (14645, 1433955), (43935, 477985), (73225, 286791), (95597, 219675)]