20213144847

素因数分解:

$3^2\times 7^1\times {\mathrm{79}}^2\times {\mathrm{101}}^1\times {\mathrm{509}}^1$

素因数の和:781

約数の個数: 72

約数和(自身を含む): 34197115680

約数和(自身を除く): 13983970833

約数列:

[1, 3, 7, 9, 21, 63, 79, 101, 237, 303, 509, 553, 707, 711, 909, 1527, 1659, 2121, 3563, 4581, 4977, 6241, 6363, 7979, 10689, 18723, 23937, 32067, 40211, 43687, 51409, 55853, 56169, 71811, 120633, 131061, 154227, 167559, 281477, 359863, 361899, 393183, 462681, 502677, 630341, 844431, 1079589, 1891023, 2533293, 3176669, 3238767, 4061311, 4412387, 5673069, 9530007, 12183933, 13237161, 22236683, 28429177, 28590021, 36551799, 39711483, 66710049, 85287531, 200130147, 255862593, 320843569, 962530707, 2245904983, 2887592121, 6737714949, 20213144847]

約数ペア:

[(1, 20213144847), (3, 6737714949), (7, 2887592121), (9, 2245904983), (21, 962530707), (63, 320843569), (79, 255862593), (101, 200130147), (237, 85287531), (303, 66710049), (509, 39711483), (553, 36551799), (707, 28590021), (711, 28429177), (909, 22236683), (1527, 13237161), (1659, 12183933), (2121, 9530007), (3563, 5673069), (4581, 4412387), (4977, 4061311), (6241, 3238767), (6363, 3176669), (7979, 2533293), (10689, 1891023), (18723, 1079589), (23937, 844431), (32067, 630341), (40211, 502677), (43687, 462681), (51409, 393183), (55853, 361899), (56169, 359863), (71811, 281477), (120633, 167559), (131061, 154227)]