20987940455

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{191}}^1\times {\mathrm{229}}^1\times {\mathrm{5051}}^1$

素因数の和:5495

約数の個数: 32

約数和(自身を含む): 26771558400

約数和(自身を除く): 5783617945

約数列:

[1, 5, 19, 95, 191, 229, 955, 1145, 3629, 4351, 5051, 18145, 21755, 25255, 43739, 95969, 218695, 479845, 831041, 964741, 1156679, 4155205, 4823705, 5783395, 18330079, 21976901, 91650395, 109884505, 220925689, 1104628445, 4197588091, 20987940455]

約数ペア:

[(1, 20987940455), (5, 4197588091), (19, 1104628445), (95, 220925689), (191, 109884505), (229, 91650395), (955, 21976901), (1145, 18330079), (3629, 5783395), (4351, 4823705), (5051, 4155205), (18145, 1156679), (21755, 964741), (25255, 831041), (43739, 479845), (95969, 218695)]