28978806025

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{127}}^1\times {\mathrm{1019}}^1$

素因数の和:1235

約数の個数: 72

約数和(自身を含む): 39996011520

約数和(自身を除く): 11017205495

約数列:

[1, 5, 13, 25, 53, 65, 127, 169, 265, 325, 635, 689, 845, 1019, 1325, 1651, 3175, 3445, 4225, 5095, 6731, 8255, 8957, 13247, 17225, 21463, 25475, 33655, 41275, 44785, 54007, 66235, 87503, 107315, 129413, 168275, 172211, 223925, 270035, 331175, 437515, 536575, 647065, 702091, 861055, 1137539, 1350175, 1682369, 2187575, 3235325, 3510455, 4305275, 5687695, 6858889, 8411845, 9127183, 17552275, 21870797, 28438475, 34294445, 42059225, 45635915, 89165557, 109353985, 171472225, 228179575, 445827785, 546769925, 1159152241, 2229138925, 5795761205, 28978806025]

約数ペア:

[(1, 28978806025), (5, 5795761205), (13, 2229138925), (25, 1159152241), (53, 546769925), (65, 445827785), (127, 228179575), (169, 171472225), (265, 109353985), (325, 89165557), (635, 45635915), (689, 42059225), (845, 34294445), (1019, 28438475), (1325, 21870797), (1651, 17552275), (3175, 9127183), (3445, 8411845), (4225, 6858889), (5095, 5687695), (6731, 4305275), (8255, 3510455), (8957, 3235325), (13247, 2187575), (17225, 1682369), (21463, 1350175), (25475, 1137539), (33655, 861055), (41275, 702091), (44785, 647065), (54007, 536575), (66235, 437515), (87503, 331175), (107315, 270035), (129413, 223925), (168275, 172211)]