21758345

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{151}}^1\times {\mathrm{179}}^1$

素因数の和:365

約数の個数: 32

約数和(自身を含む): 31518720

約数和(自身を除く): 9760375

約数列:

[1, 5, 7, 23, 35, 115, 151, 161, 179, 755, 805, 895, 1057, 1253, 3473, 4117, 5285, 6265, 17365, 20585, 24311, 27029, 28819, 121555, 135145, 144095, 189203, 621667, 946015, 3108335, 4351669, 21758345]

約数ペア:

[(1, 21758345), (5, 4351669), (7, 3108335), (23, 946015), (35, 621667), (115, 189203), (151, 144095), (161, 135145), (179, 121555), (755, 28819), (805, 27029), (895, 24311), (1057, 20585), (1253, 17365), (3473, 6265), (4117, 5285)]