20165918980

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1\times {\mathrm{207511}}^1$

素因数の和:207676

約数の個数: 48

約数和(自身を含む): 43716968064

約数和(自身を除く): 23551049084

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 113, 172, 215, 226, 430, 452, 565, 860, 1130, 2260, 4859, 9718, 19436, 24295, 48590, 97180, 207511, 415022, 830044, 1037555, 2075110, 4150220, 8922973, 17845946, 23448743, 35691892, 44614865, 46897486, 89229730, 93794972, 117243715, 178459460, 234487430, 468974860, 1008295949, 2016591898, 4033183796, 5041479745, 10082959490, 20165918980]

約数ペア:

[(1, 20165918980), (2, 10082959490), (4, 5041479745), (5, 4033183796), (10, 2016591898), (20, 1008295949), (43, 468974860), (86, 234487430), (113, 178459460), (172, 117243715), (215, 93794972), (226, 89229730), (430, 46897486), (452, 44614865), (565, 35691892), (860, 23448743), (1130, 17845946), (2260, 8922973), (4859, 4150220), (9718, 2075110), (19436, 1037555), (24295, 830044), (48590, 415022), (97180, 207511)]