20790325255

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{521}}^1\times {\mathrm{2609}}^1$

素因数の和:3184

約数の個数: 64

約数和(自身を含む): 31390156800

約数和(自身を除く): 10599831545

約数列:

[1, 5, 7, 19, 23, 35, 95, 115, 133, 161, 437, 521, 665, 805, 2185, 2605, 2609, 3059, 3647, 9899, 11983, 13045, 15295, 18235, 18263, 49495, 49571, 59915, 60007, 69293, 83881, 91315, 227677, 247855, 300035, 346465, 346997, 419405, 420049, 1138385, 1140133, 1359289, 1593739, 1734985, 2100245, 5700665, 6796445, 7968695, 7980931, 9515023, 25826491, 31263647, 39904655, 47575115, 129132455, 156318235, 180785437, 218845529, 594009293, 903927185, 1094227645, 2970046465, 4158065051, 20790325255]

約数ペア:

[(1, 20790325255), (5, 4158065051), (7, 2970046465), (19, 1094227645), (23, 903927185), (35, 594009293), (95, 218845529), (115, 180785437), (133, 156318235), (161, 129132455), (437, 47575115), (521, 39904655), (665, 31263647), (805, 25826491), (2185, 9515023), (2605, 7980931), (2609, 7968695), (3059, 6796445), (3647, 5700665), (9899, 2100245), (11983, 1734985), (13045, 1593739), (15295, 1359289), (18235, 1140133), (18263, 1138385), (49495, 420049), (49571, 419405), (59915, 346997), (60007, 346465), (69293, 300035), (83881, 247855), (91315, 227677)]