21016190

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{3943}}^1$

素因数の和:4004

約数の個数: 32

約数和(自身を含む): 41743296

約数和(自身を除く): 20727106

約数列:

[1, 2, 5, 10, 13, 26, 41, 65, 82, 130, 205, 410, 533, 1066, 2665, 3943, 5330, 7886, 19715, 39430, 51259, 102518, 161663, 256295, 323326, 512590, 808315, 1616630, 2101619, 4203238, 10508095, 21016190]

約数ペア:

[(1, 21016190), (2, 10508095), (5, 4203238), (10, 2101619), (13, 1616630), (26, 808315), (41, 512590), (65, 323326), (82, 256295), (130, 161663), (205, 102518), (410, 51259), (533, 39430), (1066, 19715), (2665, 7886), (3943, 5330)]