20561625

素因数分解:

$3^2\times 5^3\times 7^2\times {\mathrm{373}}^1$

素因数の和:408

約数の個数: 72

約数和(自身を含む): 43232904

約数和(自身を除く): 22671279

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 49, 63, 75, 105, 125, 147, 175, 225, 245, 315, 373, 375, 441, 525, 735, 875, 1119, 1125, 1225, 1575, 1865, 2205, 2611, 2625, 3357, 3675, 5595, 6125, 7833, 7875, 9325, 11025, 13055, 16785, 18277, 18375, 23499, 27975, 39165, 46625, 54831, 55125, 65275, 83925, 91385, 117495, 139875, 164493, 195825, 274155, 326375, 419625, 456925, 587475, 822465, 979125, 1370775, 2284625, 2937375, 4112325, 6853875, 20561625]

約数ペア:

[(1, 20561625), (3, 6853875), (5, 4112325), (7, 2937375), (9, 2284625), (15, 1370775), (21, 979125), (25, 822465), (35, 587475), (45, 456925), (49, 419625), (63, 326375), (75, 274155), (105, 195825), (125, 164493), (147, 139875), (175, 117495), (225, 91385), (245, 83925), (315, 65275), (373, 55125), (375, 54831), (441, 46625), (525, 39165), (735, 27975), (875, 23499), (1119, 18375), (1125, 18277), (1225, 16785), (1575, 13055), (1865, 11025), (2205, 9325), (2611, 7875), (2625, 7833), (3357, 6125), (3675, 5595)]