21400291535

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1\times {\mathrm{130621}}^1$

素因数の和:130815

約数の個数: 32

約数和(自身を含む): 30496579584

約数和(自身を除く): 9096288049

約数列:

[1, 5, 7, 31, 35, 151, 155, 217, 755, 1057, 1085, 4681, 5285, 23405, 32767, 130621, 163835, 653105, 914347, 4049251, 4571735, 19723771, 20246255, 28344757, 98618855, 138066397, 141723785, 611436901, 690331985, 3057184505, 4280058307, 21400291535]

約数ペア:

[(1, 21400291535), (5, 4280058307), (7, 3057184505), (31, 690331985), (35, 611436901), (151, 141723785), (155, 138066397), (217, 98618855), (755, 28344757), (1057, 20246255), (1085, 19723771), (4681, 4571735), (5285, 4049251), (23405, 914347), (32767, 653105), (130621, 163835)]