21553869815

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{307}}^1\times {\mathrm{5261}}^1$

素因数の和:5747

約数の個数: 32

約数和(自身を含む): 27655556544

約数和(自身を除く): 6101686729

約数列:

[1, 5, 17, 85, 157, 307, 785, 1535, 2669, 5219, 5261, 13345, 26095, 26305, 48199, 89437, 240995, 447185, 819383, 825977, 1615127, 4096915, 4129885, 8075635, 14041609, 27457159, 70208045, 137285795, 253574939, 1267874695, 4310773963, 21553869815]

約数ペア:

[(1, 21553869815), (5, 4310773963), (17, 1267874695), (85, 253574939), (157, 137285795), (307, 70208045), (785, 27457159), (1535, 14041609), (2669, 8075635), (5219, 4129885), (5261, 4096915), (13345, 1615127), (26095, 825977), (26305, 819383), (48199, 447185), (89437, 240995)]