21399105

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{257}}^1$

素因数の和:346

約数の個数: 64

約数和(自身を含む): 42997248

約数和(自身を除く): 21598143

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 61, 65, 91, 105, 183, 195, 257, 273, 305, 427, 455, 771, 793, 915, 1281, 1285, 1365, 1799, 2135, 2379, 3341, 3855, 3965, 5397, 5551, 6405, 8995, 10023, 11895, 15677, 16653, 16705, 23387, 26985, 27755, 47031, 50115, 70161, 78385, 83265, 109739, 116935, 203801, 235155, 329217, 350805, 548695, 611403, 1019005, 1426607, 1646085, 3057015, 4279821, 7133035, 21399105]

約数ペア:

[(1, 21399105), (3, 7133035), (5, 4279821), (7, 3057015), (13, 1646085), (15, 1426607), (21, 1019005), (35, 611403), (39, 548695), (61, 350805), (65, 329217), (91, 235155), (105, 203801), (183, 116935), (195, 109739), (257, 83265), (273, 78385), (305, 70161), (427, 50115), (455, 47031), (771, 27755), (793, 26985), (915, 23387), (1281, 16705), (1285, 16653), (1365, 15677), (1799, 11895), (2135, 10023), (2379, 8995), (3341, 6405), (3855, 5551), (3965, 5397)]