206858015

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{257}}^1$

素因数の和:372

約数の個数: 64

約数和(自身を含む): 322479360

約数和(自身を除く): 115621345

約数列:

[1, 5, 7, 13, 29, 35, 61, 65, 91, 145, 203, 257, 305, 377, 427, 455, 793, 1015, 1285, 1769, 1799, 1885, 2135, 2639, 3341, 3965, 5551, 7453, 8845, 8995, 12383, 13195, 15677, 16705, 22997, 23387, 27755, 37265, 52171, 61915, 78385, 96889, 109739, 114985, 116935, 160979, 203801, 260855, 454633, 484445, 548695, 678223, 804895, 1019005, 1426607, 2273165, 3182431, 3391115, 5910229, 7133035, 15912155, 29551145, 41371603, 206858015]

約数ペア:

[(1, 206858015), (5, 41371603), (7, 29551145), (13, 15912155), (29, 7133035), (35, 5910229), (61, 3391115), (65, 3182431), (91, 2273165), (145, 1426607), (203, 1019005), (257, 804895), (305, 678223), (377, 548695), (427, 484445), (455, 454633), (793, 260855), (1015, 203801), (1285, 160979), (1769, 116935), (1799, 114985), (1885, 109739), (2135, 96889), (2639, 78385), (3341, 61915), (3965, 52171), (5551, 37265), (7453, 27755), (8845, 23387), (8995, 22997), (12383, 16705), (13195, 15677)]